Commodity: |
Cotton |
Traits: |
Glufosinate tolerance |
Name of product applicant: |
Bayer |
Summary of application: |
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Date of authorization: |
29/10/2008 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
Biosafety Clearing House (BCH)
OECD BioTrack Product Database
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Summary of the safety assessment (food safety): |
Please see the EU relevant links.
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Where detection method protocols and appropriate reference material (non-viable, or in certain circumstances, viable) suitable for low-level situation may be obtained: |
Event specific real-time quantitative PCR based method for genetically modified ACS-GHØØ1-3 cotton . - Validated by the Community reference laboratory established under Regulation (EC) No 1829/2003.
Please see the EU relevant links
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Relevant links to documents and information prepared by the competent authority responsible for the safety assessment: |
Opinion of the European Food Safety Authority
Method for Detection
Reference Material
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Authorization expiration date (a blank field means there is no expiration date) |
28/10/2018 |
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Organization/agency name (Full name): European Union
Contact person name: Alexandre Huchelmann
Website:
Physical full address: European Commission B232 04/106 1047 Brussels
Phone number: 3222954092
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Country introduction: The process for authorising a new GMO is based on the EU regulation on GM food and feed (1829/2003). An application for authorising food or feed consisting of or made from a GMO must be submitted to the national authorities. The national authority then sends the application to the European Food Safety Agency (EFSA) for a risk assessment. EFSA then makes the application summary available to the public. No matter where in the EU the company applies, EFSA assesses the risks the GMO presents for the environment, human health and animal safety. If the application covers cultivation, EFSA delegates the environmental risk assessment to an EU country which sends EFSA its risk assessment report. After performing the risk assessment, EFSA submits its scientific opinion to the European Commission and to EU countries. The opinion is made available to the public, except for certain confidential aspects. Once EFSA publishes its risk assessment, the public has 30 days to comment on the Commission website for applications under Reg. 1829/2003, and on the Joint Research Centre website on the assessment report of the "lead" EU country for applications under Directive 2001/18. Within 3 months of receiving EFSA's opinion, the Commission grants or refuses the authorisation in a proposal. If it differs from EFSA’s opinion, it must explain why. National representatives approve the Commission’s proposal by qualified majority in: (1) The Standing Committee on the Food Chain and Animal Health if the application was submitted under Reg. 1829/2003; (2) The Regulatory Committee under Directive 2001/18/EC if the application was submitted under Dir. 2001/18. The proposal is adopted if the Committee agrees with it. If there is no opinion, the Commission may summon an Appeal Committee where EU countries can adopt or reject the proposal. If the Appeal Committee makes no decision, the Commission may adopt its proposal. Authorisations are valid for 10 years (renewable).
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Relevant documents
Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
Bayer CropScience Pty Ltd |
Summary of application: |
Cotton line LL25 has been genetically modified to be tolerant to the herbicide glufosinate ammonium. Glufosinate ammonium (also referred to as phosphinothricin) is a non-selective, contact herbicide that provides effective post-emergence control of many broadleaf and grassy weeds. The mode of action of the herbicide is to inhibit the enzyme glutamine synthetase, an essential enzyme involved with ammonium accumulation and nitrogen metabolism in plants. The inhibition of glutamine synthetase results in an over accumulation of ammonia in the plant, which leads to cell death. Tolerance to glufosinate ammonium is conferred though the expression in the plant of the enzyme phosphinothricin acetyltransferase (PAT), encoded by the bar gene from the soil bacteria Streptomyces hygroscopius. The production of PAT by cotton line LL25 enables the post emergence use of glufosinate ammonium herbicides without risk of damaging the crop. The applicant has stated that development of GM glufosinate ammonium tolerant cotton will provide a selective use for glufosinate ammonium, creating a valuable new weed management tool for cotton producers.
Glufosinate-ammonium is currently registered in Australia under the commercial name of Basta for non-selective uses, or Finale for turf and home garden uses, and as Buster in New Zealand.
Cottonseed is processed into four major by-products: oil, meal, hulls and linters. Only the oil and the linters are used in food products in Australia and New Zealand. Cottonseed oil is used in a variety of foods including cooking, salad and frying oils: mayonnaise, salad dressing, shortening, margarine and packaging oils. Cottonseed oil is the third major vegetable oil produced in the U.S., behind soybean and corn oil (NCPA 1999). It is considered to be premium quality oil, due to its balance in unsaturated fatty acids and high tocopherol (Vitamin E) content and stability when used as frying oil. Cotton linters are used as a cellulose base in high fibre dietary products as well as viscosity enhancers in toothpaste, ice cream and salad dressing. Linter fibre is also used to improve the viscosity of dressings and is commonly used to bind solids in pharmaceutical preparations such as tablets. Linter pulp also has diverse uses in the paper industry, in fingernail polishes and printed electrical board circuits for use in the computer and electronics industry (NCPA, 1999). Cottonseed
meal is primarily used for stock food and is not currently sold for human consumption in Australia or New Zealand.
Cotton line LL25 has been developed for cultivation in the United States, Canada and
Australia. The Office of the Gene Technology Regulator (OGTR) has granted the applicant a licence for field trials of this cotton in Australia (DIR038/2003). It is intended that cotton line LL25 will be used in conventional breeding programs and may therefore enter the Australian food supply as both domestic and imported food products, once LibertyLink cotton has been approved for commercial production.
Cotton is not grown in New Zealand and therefore food from cotton line LL25 will enter the New Zealand food supply as imported, processed food products only. |
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Date of authorization: |
10/02/2006 |
Scope of authorization: |
Food |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
OECD BioTrack Product Database
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Summary of the safety assessment (food safety): |
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Where detection method protocols and appropriate reference material (non-viable, or in certain circumstances, viable) suitable for low-level situation may be obtained: |
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Relevant links to documents and information prepared by the competent authority responsible for the safety assessment: |
Application A533 - Food Derived from Glufosinate-Ammonium-Tolerant Cotton Line LL25
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Authorization expiration date (a blank field means there is no expiration date) |
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E-mail:
Organization/agency name (Full name): Food Standards Australia New Zealand
Contact person name: Gaya Subramaniam
Website:
Physical full address: Level 4, 15 Lancaster Place, Majura Park ACT 2609, Australia
Phone number: +61 2 6271 2222
Fax number: +61 2 6271 2278
Country introduction: Food Standards Australia New Zealand (FSANZ) is the regulatory agency responsible for the development of food standards in Australia and New Zealand. The main office (approximately 115 staff) is located in Canberra (in the Australian Capital Territory) and the smaller New Zealand office (approximately 10 staff) is located in Wellington on the North Island.
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Relevant documents
Stacked events: FSANZ does not: Separately assess food from stacked event lines where food from the GM parents has already been approved; Mandate notification of stacked events by developers; Notify the public of stacked event ‘approvals’; List food derived from stacked event lines in the Code, unless the stacked event line has been separately assessed as a single line e.g. Application A518: MXB-13 cotton (DAS-21023-5 x DAS-24236-5)
No separate approval or safety assessment is necessary for foods derived from a stacked GM line that is the result of traditional breeding between a number of GM parent lines for which food has already been approved. Food from the parent lines must be listed in the Australia New Zealand Food Standards Code. The parent lines may contain any number of different genes. If food from any of the GM parent lines has not been approved, then a full pre-market safety assessment of food from the stacked line must be undertaken.
No separate approval is required for food derived from a line that is the product of a GM line, for which food has been approved, crossed traditionally with a non-GM line.
Where a single line containing a number of genes has been produced as a result of direct gene technology methods (rather than traditional crossing) then food derived from the line must undergo a full pre-market safety assessment before approval can be given
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Food Standards Australia New Zealand (FSANZ) (http://www.foodstandards.gov.au)
Name of product applicant: |
Bayer S.A |
Summary of application: |
Commercial release of LibertyLink cotton Event LLCotton25 |
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Date of authorization: |
21/08/2008 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
Center for Environmental Risk Assessment
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Summary of the safety assessment (food safety): |
Event LLCotton25, commercially known as LibertyLink is tolerant to glufosinate ammonium, a synthetic composite with herbicide properties, corresponding to the phosphinotricine produced by some microorganisms. Tolerance to glufosinate ammonium is granted by the bar gene that codes the synthesis of the phosphinotricine-N-acetyltransferase (PAT), that catalyzes the acetylation of glufosinate ammonium into N-acetyl-glufosinate or 4-methylphosphonico-butanoic (MPB) acid. The herbicide is registered with MInistério da Agricultura, Pecuária e Abastecimento (MAPA), the Brazilian Ministry of Agriculture and Supply, with Instituto Brasileiro do Meio Ambiente (IBAMA), the Brazilian Environment Institute and has a monograph approved by Ministério da Saúde, the Brazilian Ministry of Health, and is marketed in Brazil and several other countries. The commercial event LLCotton25 was obtained by transformation of cotton tissues of the region between the hypocotile and the radicle, collected three days after emergence and submitted to cultivation in a culture with Agrobacterium tumefaciens using the binary transformation system with plasmid Ti pGV3000 and the binary vector pGSV71. The crossing of information acquired with Southern Blot experiments and heritage of the inserted characteristics demonstrates that event LLCotton25 displays a single copy of the transgene that has been incorporated to the genome in a stable form. ELISA Enzyme Linked Immuno Sorbent Assay) show that the PAT protein is concentrated in the seed, and is also detected in fibers and linter. Amounts of proteins found in naked seeds of LLCotton25 plants were similar in specimens treated and not treated with glufosinate ammonium (127 and 118 ƒÝg/g), in linter (1.15 and 0.92 ƒÝg/g), and fiber (0.78 and 0.50 ƒÝg/g). In roots, stem, leaves, frozen and dried pollen, the amounts of PAT protein in plants with 2 to 4 leaves were 7.97ƒÝg/g (0.35% of total proteins), 36.8 ƒÝg/g (0.74% of total proteins), 52.9 ƒÝg/g (0.74% of total proteins), 8.23 ƒÝg/g (0.006% of total proteins) and 19.2ƒÝg/g (0.018% of total proteins) respectively. Biosafety tests support the conclusion that the PAT protein is highly specific and has no homologue sequence of any allergen and no characteristic associated with food toxins; has no N-glycosylation site; is rapidly degraded by gastric and bowel fluids; and failed to display adverse effect in mice receiving high doses of the protein, after intravenous administration. In practice, plants containing PAT protein are widely cultivated in the United States of America and Canada for almost a decade, without any report of adverse effect when used in human and animal feeding.
This protein action is well known and there is no evidence in the literature that it may have any biocide action against a non-target organism. The characteristic endowed by the bar gene – tolerance to herbicide – is acknowledged as unable to grant to receiving genotypes any adaptive advantage outside farming areas, since outside such areas potential receiving wild genotypes are not under selective pressure of the herbicide glufosinate ammonium and, therefore, any pollination of such genotypes would not result in genetic introgression. It is highly unlikely that the bar transgene of Event LLCoton25 shall be transferred to pest making them more invasive. Agronomic essays conducted, and enclosed to the proceedings, and the reports of planned releases to the environment failed to identify differences between LLCotton25 and its isoline in what concerns susceptibility to diseases and pests. The likelihood that the herbaceous LLCotton25 cotton may change into a pest is deemed negligible. The biochemical composition analysis of LibertyLink Cotton demonstrates that event LLCotton25 is substantially equivalent to non-genetically modified varieties, strongly suggesting that the event in study fails to display undesirable pleiotropic effects. None of the phenotypic characteristics of genetically modified cotton plants underwent changes as a result of insertion and expression of the bar gene in contrast to non-modified cultivars. Bibliographic data and results submitted confirm the transgenic variety level of risk as equivalent to non-transgenic varieties regarding soil microbiota, non-target vertebrate and invertebrate animals and other plants. The LibertyLink system facilitates implementation of the direct planting system, a practice that entails cuts in production prices and reduces environmental impact, provides better water retention in soil, less soil compaction, less erosion, reduced loss of nutrients, less use of tractors and consequently cuts in fuel. Available information indicates that transgenic plants are no fundamentally different from the non-transformed cotton genotypes, except for the tolerance to glufosinate ammonium. Besides, there is no evidence of adverse reactions to the use of LibertyLink Cotton. For the above reasons, there are no restrictions to the use of this cotton or its derivatives, either for human or animal feeding. For the foregoing, the commercial release of LibertyLink Cotton is not potentially harmful to human and animal health, nor causes significant degradation to the environment. According to the provisions of Article 1 of Law no. 11,460, of March 21, 2007, “research and cultivation of genetically modified organisms may not be conducted in indigenous lands and areas of conservation units.” There are no indigenous varieties of cotton plants and the special cotton plant chains, both conventional and transgenic, had satisfactorily lived side-by-side, without known reports of coexistence problems. According to Annex I to Ruling Resolution no. 05, of March 12, 2008, applicant shall make appropriate amendments to its proposed post commercial release monitoring plan. In the context of competences envisaged by Article 14 of Law no. 11,105/05, CTNBio held that the request complies with the applicable rules and legislation aimed at securing the safety of the environment, agriculture, and human and animal health.
TECHNICAL OPINION
I. Identification of GMO
Characteristic introduction Method:
Name of GMO: LibertyLink Cotton – Event LLCotton25
Applicant: Bayer S.A.
Species: Gossypium hirsutum L.
Inserted Characteristics: Tolerance to the herbicide glufosinate ammonium
Method of insertion: Transformation mediated by Agrobacterium tumefaciens
Proposed use: Production of fibers for the textile industry and grains for human and animal consumption from the GMO and its derivatives
II. General Information
The herbaceous cotton (Gossypium hirsutum L.) belongs to the Malvaceae family, is an allotetraploid plant, native of Mexico and sexually compatible with all other allotetraploid species of the same genus. Out of cultivated plants, this is the most used by humankind(18) and, in Brazil, it is cultivated in small and large properties in regions with different economic features(31).
Cotton plant is one of the main cultivated plants, represented by commercial species, such as G. hirsutum, G. barbadense, G. arboretum, and G. herbaceum. G. hirsutum is the main species, with a production nearing 90% of the total cotton fibers produced in the world, responsible for over 40% of world clothing(9).Cotton is held as a main agricultural product and is of great importance to Brazil, mainly for its complex production/industry and high use of manpower.
Two types of cotton plants are predominantly cultivated in Brazil: the conventional and the genetically modified one, the latter resistant to caterpillars. These cotton plants are responsible for practically all cotton produced in Brazil. In addition to the above ones, three other cotton plants with special genetic of ecologic characteristics are cultivated: the cotton featuring naturally colored fiber and the agro-ecological cotton. Colored cotton is almost exclusively concentrated in the State of Paraíba and the planted area in 2007 was about 300 hectares. Production of certified organic cotton takes place in the States of Paraná and Paraíba, and the area cultivated in 2007 reached 250 hectares (Alexandre Karkaly, et. al.). Agro-ecological cotton is cultivated by 235 farmers in the semi-arid biome of four States of the Brazilian Northeast region, with an output of 42t(51). Chains of special, conventional and transgenic cotton plants have lived together in a satisfactory way, without any known record of coexistence problems. The area occupied by cotton plants in the 2007/2008 crop was about one million and one hundred thousand hectares, of which over 85% in the Cerrado biome, especially in the States of Mato Grosso, Bahia, Goiás and Mato Grosso do Sul. The remaining cotton farming is present in other Brazilian States, particularly in the semi-arid part of the Northeast region and States of Paraná, Minas Gerais and São Paulo(43).
Besides the herbaceous cotton, other three cotton plants occur in Brazil, all allotetraploid and therefore compatible with the cultivars. None of such species is held as a pest in agricultural or natural environments.
The species G. barbadense has a domestication center in the Northern Peru and Southern Ecuador(12). It was introduced by pre-Colombian peoples and its fiber was used to make textile craftsmanship by some indigenous ethnic groups before the Portuguese arrival(54). Its use as a textile plant grew among the colonizers, but start decaying with the dissemination of the two exotic races of G. hirsutum. G. barbadense is not found in natural environments and is maintained basically as a backyard plant. It is widely distributed across most of the country and the in situ conservation is directly linked to the traditional maintenance of use as a medicine plant(8).
The only species indigenous in Brazil is G. mustelinium, with natural distribution restricted to the Northeastern semi-arid(33, 45). Known populations are restricted to the States of Bahia and Rio Grande do Norte, in municipalities that are not producers of herbaceous cotton. Two problems affect the in situ maintenance of G. mustelinium. The first, and most severe, is the destruction of gallery forest of rivers and intermittent rivulets, the habitat of the species. The second is the extensive cattle raising of the region, especially goats. These animals feed on sprouts, leaves, fruits, seed and stalk bark, affecting the development and, in some cases, killing adult plants. Renewal of populations is also affected, since grazing on young plants causes their partial destruction(6). The distance among known populations and cotton producing regions prevents the cross of G. mustelinum with herbaceous cotton in the fields.
A third type of cotton plant is known as mocó cotton and belongs to a race different from the same species of the herbaceous cotton (G. hirsutum r. marie galante (Watt) Hutch.). Its origin is the Antilles and the history of its introduction to Brazil is uncertain, including hypotheses that it had been brought by Netherlanders or Africans during the colonial period(54). Mocó cotton plant was extensively cultivated in the Northeastern semi-arid up to the end of the 1980s, when different problems caused an abrupt interruption of its cultivation(8). A small amount of herbaceous cotton plants, mainly inter-racial hybrids of white and colored fiber cottons, produced by an Embrapa, the Brazilian Company for Agricultural Research, improvement program are still cultivated. However, cultivation of such materials is decreasing, and 5,692 ha were harvested in the 2004/2005 crop year and just 1,326 ha in the 32005/2006 crop year(43). The crops are cultivated with a minimum of external resources, being the insecticide for plague-insect control the most important one. Pest plants are controlled almost exclusively by hand weeding. Transient populations of high biological importance of this race, derived from abandoned farming, are found in higher parts of ridges in some municipalities of the Seridó region of the States of Paraíba and Rio Grande do Norte(6). There populations are geographically isolated from herbaceous cotton plant areas and well represented in Embrapa’s germplasm banks.
Weed control is one of the main tillage made in cotton plant farming. Negative weed-cotton plant interactions, especially competition, allelopathy and interference in agricultural activities, cause reduced productivity and lower the market price of the cotton. Losses may be significant in case there is not appropriate and timely control(19). Main invading plants that affect cotton plant farming in Brazil are: the southern sunbur (Cenchrus equinatus), alexandergrass (Brachiaria plantaginea), Jamaican crabgrass (Digitaria horizontalis), Bermudagrass (Cynodon dactylon), Broom stick (Bidens pilosa), Bristly starbur (Acanthospermum hispidum) and morning glory (Ipomoea sp.). Weed management is conducted by cultivation, mechanical and chemical methods and control is achieved by application of herbicides, the main controlling method.
Event LLCotton25, commercially known as LibertyLink, is tolerant to glufosinate ammonium, a synthetic compound with herbicide property corresponding to phosphinothricin produced by some microorganisms. Tolerance to glufosinate ammonium is granted by the bar gene that codifies the synthesis of enzyme phosphinothricin-N-acetyltransferase (PAT), catalyzer of glufosinate ammonium acetylation to N-acetyl-glufosinate or 4-metylphosphonico-butanoic acid (MPB). These metabolites are not toxic to plants(59). The herbicide was registered with the Ministry of Agriculture and Supply (MAPA), Brazilian Institute for Environment (IBAMA), has a monograph approved by the Ministry of Health, and is marketed in Brazil and several other countries.
The LibertyLink cotton, event LLCotton25 is marketed in the United States of America since 2003, in Japan and Canada since 2004, and in Australia, Mexico and China since 2006(1). Until now, no severe damage to human or animal health or to the environment has been detected by the commercial use in the above countries. In Brazil, field experiments were conducted in different states.
III. Description of GMO and Expressed Proteins
LibertyLink Cotton has the bar gene in its composition, coming from Streptomyces hygroscopicus, strain ATCC-21705(55), a gram-positive actinobacterium common in the soil, non-pathogenic to plants, humans and animals(74, 58). This gen codifies the PAT – phosphinotricine-N-acetyltransferase, responsible for acetylation of phosphinotricine, also called glifosinate or glifosinate ammonium (GA). Inactivation of phosphotricine by PAT enables a selective use of herbicides that have glufosinate ammonium as active principle.
Commercial event LLCotton25 was obtained by transforming cotton tissues from the region between the hypocotile and the ridicule, collected at the third day after emergence and submitted to cultivation in Agrobacterium tumefaciens culture, using a binary transformation system with plasmids Ti pGV3000 and binary vector pGSV71. Explants were regenerated in an appropriate medium in the presence of Claforan 500 mg/L. The expression of the bar gene was used as a selection marker. Regenerated tissues formed the T0 plantelets, which were transferred for cultivation in the soil of a plant nursery up to flowering and production of seeds through self-impregnation.
LibertyLink Cotton Event LLCotton25 contains the following DNA sequences inserted in the cell genome:
(i) bar gene: derived from S. hygroscopicus, ATCC-21705 strain, this gene codifies the PAT-phosphinothricin-N- acetyltransferase enzyme responsible for phosphinothricine acetylation. The two first amino acid codifying codons of the beginning of the N-terminal region of the original sequence were replaced by ATG and GAC codons, in order to improve the beginning of the protein translation into plant cells. The recombinant protein has the same amino acid composition than the original protein derived from S. hygroscopicus and the bar gene final version has 551 pb, according to the full plasmid sequence pGSV71 used in the genetic transformation. Right and left border sequences of T-DNA of plasmid pTiB6S3, of A. tumefaciens and the synthetic sequences of endonuclease restriction sites are commonly used in molecular biology labs. According to available literature, there is no evidence that these sequences are expressed in plant cells(10).
(ii) CaMV 35S promoter: Sequence 1,324 pb used to direct the transcription of the bar gene.
(iii) nos terminator: 3’-nos sequence, of 260 pb, used as a terminating element of the bar transgene. The sequence comes from the nopaline-synthase gen (nos) derived from T-DNA of the pTiT37 plasmid of A. tumefaciens.
Both elements regulating the transcription, CAMV 35S and 3’-nos, have their functions widely described in the scientific literature(49, 35, 53).
A good number of Southern Blot hybridizations, using different probes covering the full T-DNA extension, were submitted to demonstrate the integration of the exogenous DNA fragment to the plant genome, the number of genic copies and the presence or absence of other DNA elements. The results concur with the applicant’s representation that only a single transgenic copy was integrated to the genome of the kindred plant and, from that one, transferred to the progenies in hemizygosis, initially, and in homozygosis in the final version of kindred lineages. No other DNA sequence present in the binary plasmid and not included in the T-DNA was detected in the genome of transgenic plants.
The genic cassette “CaMV 35S-bar-nos” therefore enables the synthesis of the PAT recombinant protein, able to chemically modify herbicides derived from glufosinate ammonium, making resistant the transformed cells and plants derived thereof. The chemical change of glufosinate ammonium prevents inhibition of the endogenous glutamine-synthase, important for the synthesis of the glutamine amino acid, fundamental in protein synthesis. Inhibition of this enzyme by the herbicide leads to toxic accumulation of ammonia in plant cells and consequent death of the plant. The PAT enzyme has a described and well known activity(32,71,77). In plant cells, there is no known substratum for such enzyme, except in cases where phosphinotricin-derived herbicides were applied to the plants.
Southern Blot analyses conducted to check the presence of pGSV71 plasmid fragments revealed that just one T-DNA fragment is present in the event. Therefore, the transformation process resulted in insertion of a functional copy of T-DNA. The absence of other sequences in the binary vector used to obtain the LLCotton25 event was confirmed by Southern Blot, to the detection limit of the methodology used.
Studies to determine stability of the insert were conducted from molecular characterization essays using the Southern Blot technique and by analyzing the transgene segregation in progenies derived from the LLCotton25 event. Southern Blot analyses show that one single copy of the transgene with a definite pattern is unaltered in the progenies, inherited according to a Mendelian pattern for several generations. Analyses of the T-DNA presence in T4, T5 and RC3F3 generations (with six different recurrent genitors) indicate that the transgene has been transmitted to such generations. Analysis of the expression of tolerance to glufosinate ammonium (phenotypic analysis) in progenies T1 and generations T2, F1, RC1 and F2 indicate that the inheritance of the transgene is of the dominant and monogenic type. Therefore, crossing the information on experiments of Southern Blot and inheritance of the inserted characteristics show that event LLCotton25 displays one single copy of the transgene that was incorporated to the genome in a stable form.
Nucleotide sequences of DNA of the cotton plants bordering the insert were included in the process, primer sequences that amplify DNA fragments containing part of the insert sequence and part of the cotton plants sequence. Using this information it is possible to unambiguously identify event LLCotton25 from other plants possessing similar inserts. The use of bordering sequences 5’ and 3’ in the BLAST algorithm failed to identify any similarity with either the regulatory or coding sequences(57). This is an indication that there shouldn’t have been interruptions in regulatory or coding sequences of other cotton plant genes. Studies of genetic stability and integrity for several generations used Mendelian segregation analysis (RFLP – Restriction Fragment Length Polymorphism) and Southern Blot were submitted and demonstrate existence of a single locus of insertion of the construct containing the bar gene in event LLCotton25 and derived lineages. The absence of other sequences in the binary vector (gene aadA resistance to Sm/Sp, streptomycin and spectinomycin; pVS1ori = replication origin) in event LLCotton25 was confirmed by Southern Blot. Four probes were used covering the remainder of plasmid pGSVB71.
ELISA (Enzyme Linked Immuno Sorbent Assay) analyses show that the PAT protein concentrates in the seeds, and is also detected in fibers and linter. Amounts of protein found in naked seeds of LLCotton25 Cotton plants were similar to the amounts found in plants treated and untreated with glufosinate ammonium (127 and 118 ƒÝg/g), in linter (1.15 and 0.92 ƒÝg/g) and in fiber (0.78 and 0.50ƒÝg/g). In roots, stems, frozen pollen and dried pollen, the amounts of PAT protein present in plants with 2 to 4 leaves were 7.97 ƒÝg/g (0.35% of total proteins), 36.8 ƒÝg/g (0.74% of total proteins), 52.9 ƒÝg/g (0.74% of total proteins), 8.23 ƒÝg/g (0.006% of total proteins) and 19.2 ƒÝg/g (0.018% of total proteins), respectively. PAT concentration in samples of fresh pollen displayed the higher variation interval and in some plants examined, the concentration of ƒÝg of PAT by g of fresh weight reached very high values. However, when compared with the amount of PAT relatively to the protein content, the average observed value was 20 to 40 times less than that found in roots, stems and leaves.
IV. Aspects Related to Human and Animal Health
PAT enzyme belongs to a common class of biologic catalyzers, the acetyltransferases, present in microorganisms, plants and animals. Studies of enzyme kinetics show that the PAT enzyme has no activity on other amino acids, showing its substrate-specific activity(75), i.e., it acts solely on the glufosinate ammonium composite.
PAT protein characterization studies, involving homology of its nucleotide sequence with other recognizedly allergenic proteins, have shown that there is no homology between PAT and any other known allergen. The PAT molecule also fails to display any glycosylation sites, a common characteristic of allergenic proteins(40,41).
The PAT protein has no characteristics of a toxin. In vitro essays show that the molecule is easily inactivated and denatured in acid pH, especially with digestive enzymes from the stomach and bowels. Hematologic, biochemical and urine tests, conducted in mice for a period of fourteen days, failed to show significant changes or a trend to be considered a significant toxicological parameter. Still, according to the data, the enzyme has no adverse effect to mammals, even when administered intravenously as pure protein and in high doses (1 and 10 mg/kg of live weight). Apart from the dose, the animals (mice) did not display and sign of toxicity, in contrast with the results obtained with the administration of melitin, which was 100% lethal for mice after ten minutes of treatment(46).
Stability analyses showed that the PAT enzyme is not stable when submitted to temperatures higher than 400ºC (for 15 minutes), nor when submitted to acid environments, such as the digestive system of animals and humans, and is easily destroyed when it goes through the gastrointestinal tract of animals.
The data show that the introduction of the expression cassette containing the bar gene, as well as other genic elements described above, fail to change the substantial equivalence of the LibertyLink Cotton compared to the quality and quantity standards of metabolites, such as macronutrients, proteins, lipids and carbohydrates, minerals and E vitamin. Anti-nutritional factors in seeds (gossypol, and phytic and fatty acids) showed that in both genotypes (genetically modified and conventional) the detected quantities of the above compounds were identical.
According to the data, the PAT protein allergenic and toxic potential is practically null. One may assume that cotton plants of event LLCotton25 and its progenies may be considered and substantially equivalent to the non genetically modified cotton plants.
Studies in mice showed that the levels of PAT protein100 to 1,000 times higher than the ones found in plants did not cause any evident damage to animal health when the protein was added to their diet. Intravenous injection of the protein was also assessed, without any noticeable difference as against the control group, injected with recognizedly atoxic proteins.
Besides these tests, Wehrmann and collaborators(75) describe that when the PAT protein was tested in conditions that simulated gastric juice, it was degraded within seconds. Studies conducted by Esdaile (2002)(27, 28) show that the protein was digested in 30 seconds when incubated in the presence of gastric juice. Other studies performed by the European Commission (1996)(29) accounted for inactivation of the enzyme within one minute in gastric juice conditions. These studies corroborate the results attained in studies carried out by the inspection agency of Canada(14).
Studies conducted by ILSI (International Life Science Institute) showed that similar genes exist in nature without causing any adverse effect to man and that the DNA molecule is a natural component of food, with no evidence that it may have adverse effect to man when ingested in food in acceptable quantities (no direct toxic effect)(25). FAO/WHO (2000)(30) and ILSI(25) reports describe that there is no evidence that intact genes of plants may be transferred and functionally integrated to the genome of humans or other mammals exposed to the DNA or food produced with such elements.
In an extensive review of scientific literature on transgenic plants (including glufosinate-resistant plants), Aumaitre (2004) concluded that there is a host of data involving in vitro tests and tests in animals verifying alimentary safety of products obtained from genetically modified plants(5). In practice, plants containing PAT protein are widely cultivated in the United States of America and Canada for almost a decade without reports of adverse effect when used in human and animal feeding(42).
Biosafety tests support the conclusion that PAT protein is highly specific and does not have a homologue sequence with any allergen nor has it any characteristic associated to food toxins; has no N-glycosylation site; is rapidly degraded by gastric and intestinal fluids; and failed to show any adverse effect in mice receiving high doses of the protein, after endovenous administration. Therefore, it was evidenced that inclusion of the PAT protein in human and animal feeding does not produce any harm(42).
V. Environmental and Agronomic Aspects
Modern agriculture is an activity responsible for significant negative environmental impacts(3, 17, 37, 66, 73) and, therefore, risk assessment of any MG event shall be conducted in relation to the impact that is inherent to conventional agriculture(7, 20, 56). Thus the CTNBio analysis aimed at assessing whether the environmental impact caused by the LibertyLink system is significantly higher than the one caused by conventional varieties, considering the agricultural practices associated to each system.
All species of the Gossypium genus have perfect flowers. Fecundation takes place immediately after anthesis, and self-impregnation or cross-pollination may take place. The cotton plant pollen is relatively large, measuring from 81 to 143 microns, viscous (making the grains adherent to each other), spherical in format, covered by large amount of spicules, and practically not wind-transported(60). In the field, its viability extends up to dusk, though it may last for up to 24 hours if stored in temperatures from 2ºC to 3ºC(13). Cross-pollination requires the presence of pollinating insects, mainly of the order Hymenoptera(15, 62, 63, 68). Cross-pollination rates observed in cotton plant tillage is relatively low, showing values that enable classifying G. hirsutum as a partially autogamous species or a species featuring a mixed reproduction system.
Some authors suggest that the genic flow of MG plant to wild genotypes may cause reduced biodiversity. However, reduction in genetic variability is the result of a genetic introgression phenomenon, a process far more complex than simple hybridization(20, 24, 38, 70). In order for introgression to occur, hybridization is required and, following, a series of retro-crossings so that one gene is permanently incorporated to a genome(38, 39). Introgression of a transgene to wild cotton plants could only take place if it was to grant strong selective advantage, higher than the disadvantages granted by the alleles that are genetically linked to the transgene(34, 44, 70). However, the feature granted by the bar gene – tolerance to herbicide – is recognized as unable to endow the receiving genotypes any adaptive advantage outside farming areas(22, 70), since in non-farming areas potential receiving wild genotypes are not exposed to the selective pressure of the glufosinate ammonium herbicide and, therefore, a pollination of such genotypes would not result in genic introgression. Therefore, the transfer of the tolerance to herbicide feature to non-farming areas is extremely unlikely(22, 70).
A question raised about genetically modified plants tolerant to herbicides (TH) is the likelihood of crossing of such plants with weeds and consequent invasion of better adapted TH plants(26, 34). However, in order to be formed, such “super weeds” would need hybridization of the genetically modified plant with an invading species and a selective pressure (application of herbicide) in the same physical area where the hybrid is located(70). Without all such pre-conditions, appearance of herbicide tolerant weed is negligible(21, 36, 48, 65). Indeed, available experimental data surveyed in large-scale herbicide tolerant GMO farming regions confirm that the development of resistance to herbicide in weeds is unrelated to the genetic modification, yet related to the management of cultures and herbicides used by farmers(16, 67). Moreover, there are not in Brazil species sexually compatible with G. hirsutum displaying characteristics of invading plants. Thus, one reaches the conclusion that it is extremely unlikely that the bar transgene of Event LLCotton 25 is transferred to weeds, making them more invasive. As explained above, customary care with the management of cultures and herbicides, such as rotation of crops and herbicides with different action mechanisms, shall be the focus to mitigate the appearance of weeds tolerant to herbicides.
Agronomic essays conducted and enclosed to the proceedings in addition to the reports of planned releases to the environment failed to identify differences between the LLCotton25 cotton plant and its isoline in what regards susceptibility to diseases and plagues. The same was ascertained regarding phenology in different farming conditions and stress caused by low temperatures. The behavior of LLCotton25 was not assessed outside the agricultural environment. Despite this, an increase in dispersion and survival ability associated to the inserted feature is expected in the presence of the selective agent glufosinate ammonium. Analyses conducted in agricultural conditions of competition with bush vegetations evidence that the ability of competition in other environments where this cotton plant may occur shall be similar to the conventional cotton plant. Therefore, the likelihood that the herbaceous cotton LLCotton25 may change into a pest was deemed negligible.
The bar gene product grants tolerance to glufosinate ammonium by acetylation of the compound, making it to loose its herbicide action(23,50,76). Alimentary safety tests demonstrate that the PAT enzyme has no toxic effect, such safety already ascertained in rice, corn, soy and canola plants(58). Thus, the action of the genic product is well known and there is no evidence in literature that it has biocide action against non-target organisms.
Although structural rearrangements have occurred during the evolution of allotetraploid Gossypium species and there are self-incompatibility mechanisms in certain genitor combinations, the existing sexual barriers are partial and unable to prevent that the vertical genic flow occurs among species of this genus. Therefore, the transgene may be transferred by crossing to other types of cotton plants in the country.
In addition to sexual compatibility, for the genic flow to occur, certain factors must be present as, for instance, the ability of hybrids to produce fertile descendants; coincidence of flowering; the same pollinating agent; absence of pre- and post-sexual barriers; sympatry between donor and receiving populations; and that reproductive systems allow crossing. Part of such factors is well possible to occur between genetically modified cotton plants and wild species of the genus Gossypium, while others are not applicable or only partially applicable. In case the genic flow occurs, the main likely negative consequences are the loss of in situ diversity and a positive adaptive effect to cause an increase of the receptor species aggressiveness in farm or natural environments, making it a pest. The only species of Gossypium able to survive in a sustained mode in natural environments is G. mustelinum. There is not a farmed form of the species nor any use mentioned in the literature or by inhabitants of the regions where it occurs. Populations of this species are known only in the Caatinga Biome of the States of Bahia and Rio Grande do Norte. It inhabits a very specific Caatinga niche, gallery forests of rivulets, rivers and intermittent ponds. The species does not occur in farm environments and, in case it did, would not be classified as an invading plant, since it displays features such as limited dispersion, long cycle and low reappearance ability when young. It is not, in addition, a pest in natural environments, coexisting in harmony with other native species. Part of known populations occurs in a strictly natural environment, non-managed by herbicides. Other populations occur in areas where the natural vegetation has been degraded of partially degraded for cattle raising, yet the management or pastures does not include the use of herbicides. Considering that the management in areas where G. mustelinum occurs does not include the use of herbicides, the absence of a selection agent makes the gene to have a neutral adaptive effect. Therefore, the likelihood of G. mustelinum changing into a pest in farm and natural environments is deemed negligible in case an introgression of the transgene occurs. G. mustelinum populations are located in regions that currently are not producers of herbaceous cotton. The distance between populations and tillage is large enough (at least some tens of kilometers) for the pollen of the tillage not to reach natural populations. Therefore, the likelihood of direct transfer of pollen from tillage to populations of G. mustelinum is negligible, being unlikely that the population structures be affected due to a genic flow with herbaceous cotton plants carrying Event LLCotton25. Unintentional dispersion by seeds may occur mainly during seed and whole cottonseed transportation, though it may also occur by feces of animals fed with cottonseeds and other animals. Scattered seeds may fall in anthropized locations, such as roadsides, germinate and flower. The plants may serve as a bridge to introduce transportation of the transgene to G. mustelinum populations and mocó cotton. Though the frequency of spontaneous plants is low and in general they do not occur near the populations, the likelihood that the transfer of spontaneous plants may mediate the transgene transfer is low. This assumed low-frequency transfer will have null adaptive effect, as discussed above.
Absence of sympatry with biologically important populations of mocó cotton plants and lack of employment of glufosinate ammonium in locations where the mocó variety occur make the same considerations already made for G. mustelinium valid for the mocó cotton (G. hirsutum var. marie galante).
G. barbadense is a domesticated species introduced by indigenous people in the country thousands of years ago. There are no reports of stable G. barbadense populations in natural environments, being them restricted to locations with strong anthropic action. G. barbadense persists as a cultivated plant for the production of textile craftsmanship in a few indigenous and rural communities, and the majority of plants are located in backyards in all Brazilian States. Its low competitive ability, probably due to the domestication process, prevents fertile populations to establish. As it was for the two species discussed above, G. barbadense is not cultivated in places where herbicides are used. Therefore, one expects a null adaptive effect in case a genic flow takes place.
Due to the larger area where G. barbadense occurs, some tillage and backyard plants coexist in a distance in which pollen transfer may, theoretically, occur. Some facts contribute for a small amount of inter-specific hybridization. Noticeably, there is preferential pollination in oospheres of G. barbadense with male gametes of G. barbadense(61). Indeed, the way in which G. barbadense is kept makes the in situ plants to reproduce, basically, through self-impregnation(2, 64), and endogamy coefficients estimated from assessments with microsatellite markers are equal to one or near one in samples collected in the States of Pará, Amapá, Pernambuco and Tocantins. Besides, the majority of plants are not near the tillage, being sympatry an exception. Considering the wide distribution of the species, low expected hybridization frequency, and that the variability contained in places where sympatry occurs is duly represented elsewhere, the likelihood of loss of diversity is negligible.
Although the location of the genome insert of a transformed plant may influence directly the level of expression of one or more feature (47,52), in risk analysis molecular characterization shall be considered taking also into account studies related to compositional, agronomic and physiological characterization of the event analyzed.
A series of field studies conducted by the applicant company enabled analyzing comparatively phenotypic characteristics such as density of foliage, staple retention, flower morphology, pilosity, reaction to plagues and diseases, finding no significant difference from conventional varieties. Similarly, the agronomic performance is equivalent, as well as the characteristics regulating survival, reproduction and adaptability of the species. There are no reports on changes in agronomic performance that were observed following commercial cultivation of the event in other countries. Besides, biochemical composition analysis shows that event LLCotton25 displays substantial equivalence to non genetically modified varieties. The results strongly suggest that the event fails to display undesirable pleiotropic effects.
Results of agronomic behavior in genetically modified cotton plants, both in quantity and quality, were equivalent to the ones observed in conventional cotton plants either in the absence or presence of herbicides derived from glufosinate ammonium. Experiments were conducted mainly from 2001 to 2003 (two crop years) and performed by technicians from Bayer CropScience Ltd. and researchers of Universidade Federal de Uberlândia, the Federal University of Uberlândia and Universidade de São Paulo, the São Paulo University in regions of the States of São Paulo and Minas Gerais. Features assessed include: height of plants; production of cotton staple; flowering pattern along the plant development; glandulation of plants and presence of foliar nectarines; size and form of leaves; pilosity of stems and leaves; color of flowers, stems and pollen grains; density of plants; number of vegetative and reproductive branches; retention of staple; and form and pattern of fruit (apples) development. Analyses of this series of genotype descriptors used for recording and protecting cultivars (among others) and behavior of genetically modified and non genetically modified plants in response to environmental factors, including culture plagues, lead to the conclusion that none of the phenotypic characteristics of genetically modified cotton plants underwent any change as a result of insertion and expression of the bar gene vis-à-vis non genetically modified cultivars. No difference was observed by authors even when the plants were submitted to different invading plant controlling methods or absence of use of herbicides. Data submitted for different phenotypic, morphologic and phonologic descriptors, agronomic performances and reactions to environmental factors were consistent, well grounded and supported by equivalent results developed in the USA.
In the analyses conducted, possible changes were taken into account resulting from the transgenic event on adaptability of genetically modified plants to agro-systems, including higher adaptation and survival potential, growth rate, development of vegetative (aerial parts and radicular system) and reproductive organs, fertilization, germination and initial vigor of plants, greater resistance to plagues and diseases, greater catchment of solar light and absorption of water and mineral salts, among others. The results obtained stress that the LibertyLink Event LLCotton 25 has competitiveness and adaptability equivalent to isogenic plants not genetically modified. Conclusions of studies developed in Brazil and the United States of America show that the crossing with other cotton species, either cultivated or native, and the transfer of genes are eminently identical to non genetically modified species. The requirement of isolation of tillage of genetically and non-genetically modified seeds to secure purity of germinative material may comply with the criteria already defined by the Brazilian Ministry of Agriculture and Supply.
Bibliographic data and results exhibited confirm the risk level of the transgenic variety as being equivalent to the non transgenic one regarding the microbiota of soil, vertebrate and invertebrate animals as well as other plants. Summarizing, the environmental safety of LibertyLink Event LLCotton25 is based on the nature of the transgene and other sequences of exogenous DNA introduced in the plant, on the behavior of the plant itself, the cotton plant, and the plant proliferation environment that is restricted to tillage areas of small, middle and large extensions.
Besides, the applicant conducted sample surveys for two years of cultivation where interaction with several pathogens was observed, such as Ramulosis, Fusarium Wilt, Angular Wilt, Alternaria Wilt, Blue Mold and Common Mosaic, and no difference was noticed when compared to non genetically modified plants. This way, both literature data and field experiments suggest that Event LLCotton25 does not cause impact against non-target organisms in addition to those already inherent to the cotton culture.
Glufosinate ammonium is a synthetic compound with herbicide properties and corresponds to the phosphinothricin produced by some microorganisms. Glufosinate ammonium belongs to the replaced Homoalanine chemical group and Herbicide Class and growth regulator(4). The product is used as post-emergent, unspecific and of wide spectrum herbicide. It inhibits the glutamine synthase that promotes the incorporation of ammonia to glutamic acid to produce glutamine. As a result, a deficit of glutamine becomes takes place together with accumulation of ammonia in toxic levels, causing the plants to die. Tolerance to glufosinate ammonium is granted by the bar gene that codifies the phosphinothricine-N-acetyltransferase (PAT), which catalyzes acetylation of glufosinate ammonium to N-acetyl-glufosinate, or 4-methylphosphinico-butanoic acid. These metabolites are not toxic to plants(59). Glufosinate ammonium is registered with the Brazilian Ministry of Agriculture and Supply (MAPA) , Institute of Environment (IBAMA) and has a monograph approved by the Ministry of Health, being marketed in Brazil and other countries. It is considered persistent and mobile in the soil and, in sandy soils up to 80% may be lixiviated. Depending on management and edaphoclimatic conditions, microbian activity and other factors, glufosinate ammonium has a mean-life in soil from 12 to 70 days. However, residues persisting in the soil for up to 100 days have been reported(69). Therefore, if used outside recommendations, the glufosinate ammonium has the potential to contaminate watercourses, and ground waters such as any other herbicide used in genetically modified cultures or otherwise(72).
Thus, theoretical assessments and studies based on scientific literature taking into account the plant, the bar gene, the PAT recombinant protein, the LibertyLink technology and the glufosinate ammonium herbicide enable ranking the risk levels to the environment as the lowest possible. The LibertyLink system facilitates implementation of direct planting since it enables controlling the post-emergence invading plants. In this system, straw and other plant residues of previous cultivations are kept at the soil surface, securing coverage and protection against harmful processes, such as erosion. Direct planting entails several benefits that reduce production costs and environmental impact, with better retention of water in the soil, less soil compaction, less erosion, lower loss of nutrients, less use of tractors and, consequently, less fuel. This way, direct planting and cultivation of Event LLCotton25 make possible to extend this system’s environmental benefits to new farming areas.
VI. Restrictions to the use of GMO and its derivatives
Technical reports related to agronomic performance concluded that there is equivalence between transgenic and conventional plants. Thus, the information indicates that transgenic plants are not fundamentally different from the genotypes of non modified cotton, except for the tolerance to glufosinate ammonium. Additionally, there are no records of adverse reactions to the use of LibertyLink Cotton. Therefore, there are no restrictions to the use of this cotton of its derivatives in human and animal food.
According to Article 1 of Law no. 11,460, of March 21, 2007, “research and cultivation of genetically modified organisms are forbidden in indigenous and conservation unit areas.”
VII. Considerations on particulars of different Brazilian regions (assistance to monitoring bodies)
LibertyLink technology proved possible to be used according to all farming practices commonly used in different regions and under different conditions, regarding availability of inputs, manpower, among others, used in cotton farming. Additionally, the technology may grant improved success to direct planting.
Studies reached a conclusion that the use of genetically modified varieties to the selective use of glufosinate ammonium does not restrict any procedure of cotton farming. There are not local cotton varieties and special cotton chains, either conventional or transgenic, have satisfactorily lived along each other, without any record of coexistence issues.
VIII. Conclusion
The long experience with traditional plant improvement methods, the experience amassed over three decades of research and over a decade of marketing transgenic varieties all over the world, in addition to the advanced knowledge on the structure and dynamics of genomes, indicating whether a certain gene or characteristic is safe or not, are an indication that the genetic engineering process on its own displays little potential for the appearance of unexpected consequences that would not be identified or eliminated during the process of development of genetically modified commercial varieties(11).
Whereas LibertyLink Cotton belongs to a well known species (Gossypium hirsutum) that has a solid history of safety for human use, and that the gene introduced in the variety does not code a toxic protein and is innocuous to humans;
Whereas the genic construct used to insert this gene in cotton resulted in a stable insertion of a functional copy of pat, that granted the plants tolerance to glufosinate ammonium;
Whereas the composition data fail to display significant differences between genetically modified and conventional varieties, suggesting equivalence between them;
Whereas
1. Cotton is one of cultivated plants most used by humankind;
2. The PAT protein is highly specific and does not have a homologue sequence with any allergen or N-glycolisation site associated with food toxin;
3. The PAT protein is rapidly degraded by gastric and bowel fluids and did not cause adverse effect in mice receiving high doses of the protein, after intravenous administration;
4. The DNA molecule is a natural component of food, showing no evidence that it may have an adverse effect to man when ingested in food in acceptable quantities (no direct toxic effect);
5. There is no evidence that intact plant genes may be transferred and be functionally integrated to the human genome or the genome of other mammals exposed to the DNA or to food made with such elements;
6. The applicant answered to all questions under CNBio Ruling Instruction no. 20 (effective at the time the application was submitted) and that none of the answers indicated that this cotton may display adverse effects to human or animal feeding;
7. The possibility that the herbaceous LLCotton25 plant to change into a weed is negligible;
8. Streptomyces hygroscopicus is a gram positive actinobacterium ubiquitous in soil, non pathogenic to plants and animals;
9. The characteristics granted by the bar gene – tolerance to herbicide – is recognized as unable to grant the receiving genotypes any adaptive advantage outside farming areas, since outside such areas the potential of receiving wild genotypes do not undergo selective pressure from the herbicide glufosinate ammonium and, therefore, pollination of these genotypes would not result in genic introgression;
10. It is highly unlikely that the bar transgene of Event LLCotton25 shall be transferred to weeds making them more invasive;
11. The action of the PAT protein is well known and there is no evidence in the literature of any biocide activity of such protein against non-target organisms;
12. The supposed low frequency genic transfer between different cotton species will have practically null adaptive effect;
13. There are no reports of changes in agronomic performance recorded from commercial cultivation of the event in other countries;
14. Analysis of biochemical composition showed that event LLCotton25 displays substantial equivalence to non genetically modified varieties, strongly suggesting that such event fails to display any undesirable pleiotropic effect;
15. Literature data and field experiments suggest that event LLCotton25 has no impact against non-target organisms in addition to those already inherent to the cotton culture;
16. Glufosinate ammonium is registered with the Brazilian Ministry of Agriculture and Supply (MAPA), Brazilian Institute of Environment (IBAMA), with a monograph approved by the Ministry of Health, and is marketed in Brazil and several other countries;
17. The LibertyLink system facilitates implementation of direct planting, a practice bringing different benefits such as reduced production costs and environmental impact, increased water retention in soil, less soil contamination, less erosion, reduced loss of nutrients, fuel savings because of less tractor use.
Finally, taking into account the criteria internationally accepted in the process of analyzing genetically modified raw materials, one may reach a conclusion that LibertyLink Cotton Event LLCotton25 is as safe as its conventional equivalent.
For the foregoing, commercial release of LibertyLink Cotton is not potentially harmful to human and animal health nor significant for environment degradation.
CTNBio analysis took into consideration previous opinions by the Commission members; ad hoc consultants; documents delivered by applicant to the CTNBio Executive Secretariat; results from planned releases to the environment; and lectures, texts and discussions of the public hearing held on 08.17.2007. Independent scientific publications of applicant, conducted by third parties, were additionally considered and consulted.
Under Annex I of Ruling Resolution no. 5, of March 12, 2008, applicant shall have a term of thirty (30) days from the publication of this Technical Opinion to change accordingly its proposal for the post-commercial release monitoring plan.
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41. HÉROUET C. 2002b. Phosphinothricin acetyltransferase gene product: epitope homology and glycosylation searches. Relatório interno, processo 01200.001894/2004-01.
42. HÉROUET C.; ESDAILE D.J.; MALLYN B.A.; DEBRUYNE E.; SHULZ A.; CURRIER T.; HENDRICKX K.; VAN DER KLIS R.; ROUAN D. 2005 Safety evaluation of the Phosphinotricin acetyltransferase proteins encoded by the pat and bar sequences that confer tolerance to glufosinate-ammonium herbicide in transgenic plants. Reg. Toxicol. And Pharmacol. 41: 134-149.
43. IBGE – Instituto Brasileiro de Geografia e Estatística. 2008. http:www.ibge.gov.br .
44. JIANG C. C.; CHEE P.W.; DRAYE X.; MORRELL P. L.; SMITH C. W.; PATERSON A. H. 2000. Multilocus interactions restrict gene introgression in interspecific populations of polyploidy Gossypium (cotton). Evolution 54: 794-814.
45. JOHNSTON J. A.; MALLORY-SMITH C.; BRUBAKER C.L.; GANDARA F.; ARAGÃO F.J.L.; BARROSO P.A.V.; QUANG V. D.; CARVALHO L.P. DE; KAGEYMA P.; CIAMPI A.Y.; FUZATTO M.; CIRINO V.; FREIRE E. 2006. Assessing gene flow from Bt cotton in Brazil and its possible consequences. 2006. In: HILBECK A.; ANDOW D.; FONTES E.M.G. Enviromental risk assessment of genetically modified organism: methodologies for assessing Bt cotton in Brazil. p. 261-299.
46. KENNEL P. 2002. PAT (Phosphinothricin-acetyltransferase) protein derived from bar gene: acute toxicity by intravenous injection in the mouse. Relatório interno, processo 01200.001894/2004-01.
47. LATHAM J.R.; WILSON A.K.; STEINBREACHER R.A. 2006. The mutational consequences of plant transformation. J. Biomed. Biotech. 2006: 1-7.
48. LEE D.; NATESAN E. 2006. Evaluating genetic containment strategies for transgenic plants. Trends Biotechnol. 24: 109-114.
49. LESSARD P.A.; KULAVEERASINGAM H., YORK G.M.; STRONG A. SINSKEY A.J. 2002. Manipulating gene expression for the metabolic engineering of plants. Met. Eng. 4: 67-79.
50. LILGE C.G.; TILLMANN M.Â.A.; VILLELA F.A.; DODE L.B. 2003. Identificação de sementes de arroz transformado geneticamente resistente ao herbicida glufosinato de amônio Rev. Bras. Sem. 25: 87-94.
51. LIMA P.J.B.F. 2007. Algodões transgênicos: grave ameaça ao algodão agroecológico e orgânico da Agricultura Familiar no Semi-árido nordestino. ESPLAR: documento apresentado em audiência pública da CTNBio sobre algodeiros geneticamente modificados.
52. LOC N.T.; TINJUANGJUN P.; GATEHOUSE A.M.R; CHRISTOU P.; GATEHOUSE J.A.2002. Linear transgene constructs lacking backbone sequences generate transgenic rice plants which accumulate higher levels of proteins conferring insect resistance. Mol. Breed. 9: 231-244.
53. MOORE I.; SAMALOVA1 M.; KURUP S. 2006. Transactivated and chemically inducible gene expression in plants. Plant J. 45: 651-683.
54. MOREIRA J.A.N. SANTOS R.F. 1994. Origem, crescimento e progresso da cotonicultura do Brasil. Campina Grande: EMBRAPA-CNPA / Brasília: EMBRAPA-SPI, 169p.
55. MURAKAMI T.; ANZAI H.; IMAI S.; SATHAH A.; NAGAOKA K. & THOMPSOM C.J. 1986. The bialaphos biosynthetic genes of Streptomyces hygroscopicus: molecular cloning and characterization of the gene cluster. Molec. Gen. Genet. 205: p.42-50.
56. NAP J.; METZ O. L. J.; ESCALER M.; CONNER A.J. 2003. The release of genetically modified crops into the environment. Part I. Overview of current status and regulations. Plant J. 33: 1-18.
57. NCBI – National Center for Biotechnology Information. http://www.ncbi.nlm.nih.gov/ . BLAST � |
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Molecular traditional methods |
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National Biosafety Commission
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E-mail:
Organization/agency name (Full name): National Biosafety Technical Commission
Contact person name: Paulo Augusto Viana Barroso
Website:
Physical full address: SPO Area 5 Qd 3 Bl B S 10.1 Brasilia DF
Phone number: 556120335087
Fax number:
Country introduction: Brazil had the first biosafety law approved in 1995. After the identification of the need to improve the biosafety system of Brazilian genetically modified organisms, a new law was published. The Law 11.105 / 05 establishes a technical committee dedicated to the analysis of the safety aspects of genetically modified organisms and a council of ministers that is dedicated to the analysis of the socioeconomic aspects of the commercial release of genetically modified organisms. In this context, Brazil already has several commercial products that involve genetically modified organisms (plants, human and veterinary vaccines, microorganisms for fuel production) and products derived from new genetic modification techniques.
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Stacked events: At the discretion of, and upon consultation with, CTNBio, a new analysis and issuance of technical opinion may be released on GMOs containing more than one event, combined through classic genetic improvement and which have been previously approved for commercial release by CTNBio
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Dr. Paulo Augusto Viana Barroso (President of national Biosafety Commission)
Name of product applicant: |
Bayer CropScience Canada |
Summary of application: |
Bayer CropScience has developed cotton (Gossypium hirsutum L.) lines based upon transformation event LibertyLink® cotton 25 (LLCotton25). Cotton varieties containing this event express the bialaphos resistance (bar) gene which confers tolerance to glufosinate-ammonium herbicides (trade name, Liberty®). Health Canada has previously indicated no objection to the sale of glufosinate tolerant corn lines DLL25 and DBT418 for human food applications in Canada. Like cotton event LLCotton25, these lines express the bar gene which confers tolerance to glufosinate ammonium.
The safety assessment performed by Food Directorate evaluators was conducted according to Health Canada's Guidelines for the Safety Assessment of Novel Foods. The assessment considered: how cotton event LLCotton25 was developed; how the composition and nutritional quality of oil derived from cotton varieties containing this event compare to the oil of non-modified cotton varieties; and what the potential is for oil derived from lines containing this event to be toxic or cause allergic reactions.
The Food Directorate has a legislated responsibility for pre-market assessment of novel foods and novel food ingredients as detailed in Division 28 of Part B of the Food and Drug Regulations (Novel Foods). Foods derived from cotton lines containing event LLCotton25 are considered novel foods under the following part of the definition of novel foods: "c) a food that is derived from a plant, animal or microorganism that has been genetically modified such that
i.the plant, animal or microorganism exhibits characteristics that were not previously observed in that plant, animal or microorganism"
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Date of authorization: |
03/09/2004 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
BioTrack Product Database
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Summary of the safety assessment (food safety): |
Please see decision document weblinks |
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Novel Foods Decision
Novel Feeds Decision
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Organization/agency name (Full name): Health Canada
Contact person name: Neil Strand
Website:
Physical full address: 251 Sir Frederick Banting Driveway, Tunney's Pasture, PL 2204A1
Phone number: 613-946-1317
Fax number:
Country introduction: Federal responsibility for the regulations dealing with foods sold in Canada, including novel foods, is shared by Health Canada and the Canadian Food Inspection Agency (CFIA). Health Canada is responsible for establishing standards and policies governing the safety and nutritional quality of foods and developing labelling policies related to health and nutrition. The CFIA develops standards related to the packaging, labelling and advertising of foods, and handles all inspection and enforcement duties. The CFIA also has responsibility for the regulation of seeds, veterinary biologics, fertilizers and livestock feeds. More specifically, CFIA is responsible for the regulations and guidelines dealing with cultivating plants with novel traits and dealing with livestock feeds and for conducting the respective safety assessments, whereas Health Canada is responsible for the regulations and guidelines pertaining to novel foods and for conducting safety assessments of novel foods.
The mechanism by which Health Canada controls the sale of novel foods in Canada is the mandatory pre-market notification requirement as set out in Division 28 of Part B of the Food and Drug Regulations.
Manufacturers or importers are required under these regulations to submit information to Health Canada regarding the product in question so that a determination can be made with respect to the product's safety prior to sale. The safety criteria for the assessment of novel foods outlined in the current guidance document (i.e. Canadian Guidelines for the Safety Assessment of Novel Foods) were derived from internationally established scientific principles and guidelines developed through the work of the Organization for Economic Cooperation and Development (OECD), Food and Agriculture Organisation (FAO), World Health Organisation (WHO) and the Codex Alimentarius Commission. These guidelines provide for both the rigour and the flexibility required to determine the need for notification and to conduct the safety assessment of the broad range of food products being developed. This flexibility is needed to allow novel foods and food products to be assessed on a case-by-case basis and to take into consideration future scientific advances.
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Stacked events: Food: Consistent with the definition of "novel food" in Division 28 of the Food and Drug Regulations, the progeny derived from the conventional breeding of approved genetically modified plants (one or both parents are genetically modified) would not be classified as a novel food unless some form of novelty was introduced into such progeny as a result of the cross, hence triggering the requirement for pre-market notification under Division 28. For example, notification may be required for modifications observed in the progeny that result in a change of existing characteristics of the plant that places those characteristics outside of the accepted range, or, that introduce new characteristics not previously observed in that plant (e.g. a major change has occurred in the expression levels of traits when stacked). In addition, the use of a wild species (interspecific cross) not having a history of safe use in the food supply in the development of a new plant line may also require notification to Health Canada. However, molecular stacks are considered new events and are considered to be notifiable as per Division 28. Feed:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Neil Strand, Section Head of Novel Foods
Name of product applicant: |
Bayern Crop Science |
Summary of application: |
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Date of authorization: |
10/05/2016 |
Scope of authorization: |
Food |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
Based on the risk assessment, it can be concluded that the event shows the same risks as its conventional counterpart. Therefore the National Technical Biosafety Committee for GMO use exclusively in Health and human consumption (CTNSalud) recommends its authorization. |
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E-mail:
Organization/agency name (Full name): Ministerio de salud y proteccion social
Contact person name: Daniel Rubio
Website:
Physical full address: Carrera 13 No. 32- 76 piso 12, Bogotá
Phone number: 330 5000 ext 1256
Fax number:
Country introduction: The 4525 decree of 2005, established the Ministry of Health and Social Protection as the competent authority for GMO for health and food purposes and creates the National Biosafety Technical Committee for GMO's used in health and food purposes (CTNSalud).
The CTNSalud is composed by the Ministry of Health and Social Protection, the National Food and Drug Surveillance Institute (INVIMA) and the Technology and Innovation Administrative Department (COLCIENCIAS). This committee is responsible for the assesment of risk assessments; to inquire for any additional information; assessment of any measurements in accordance to the Cartagena Protocol; and the recommendation for the authorization of GMO for health or food purposes.
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Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
BASF Química Colombiana S.A |
Summary of application: |
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Date of authorization: |
12/10/2021 |
Scope of authorization: |
Food |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
Based on the risk assessment, it can be concluded that the event shows the same risks as its conventional counterpart. Therefore, the National Technical Committee for GMO use exclusively in health and human consumption (CTNSalud) recommends its authorization. |
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E-mail:
Organization/agency name (Full name): Ministerio de salud y proteccion social
Contact person name: Daniel Rubio
Website:
Physical full address: Carrera 13 No. 32- 76 piso 12, Bogotá
Phone number: 330 5000 ext 1256
Fax number:
Country introduction: The 4525 decree of 2005, established the Ministry of Health and Social Protection as the competent authority for GMO for health and food purposes and creates the National Biosafety Technical Committee for GMO's used in health and food purposes (CTNSalud).
The CTNSalud is composed by the Ministry of Health and Social Protection, the National Food and Drug Surveillance Institute (INVIMA) and the Technology and Innovation Administrative Department (COLCIENCIAS). This committee is responsible for the assesment of risk assessments; to inquire for any additional information; assessment of any measurements in accordance to the Cartagena Protocol; and the recommendation for the authorization of GMO for health or food purposes.
Useful links
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Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
Bayer CropScience Ltd. |
Summary of application: |
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Date of authorization: |
28/06/2004 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
OECD BioTrack Product Database
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Summary of the safety assessment (food safety): |
Please see the link below (in Japanese). |
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Food safety assessment performed by Food Safety Commission of Japan (in Japanese), Feed
Food safety assessment performed by Food Safety Commission of Japan (in Japanese), Food
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E-mail:
Organization/agency name (Full name): Food Safety Commission Secretariat,Cabinet Office,
Contact person name: Kojiro Yokonuma
Website:
Physical full address: Akasaka 5-2-20 Minato Ward,Tokyo,Japan
Phone number: 81 3 6234 1122
Fax number: 81 3 3584 7392
Country introduction: Safety assessments of GM foods are mandatory under the Food Sanitation Law in Japan. The Ministry of Health, Labour, and Welfare (MHLW) legally imposes safety assessments of GM foods so that those that have not undergone safety assessments would not be distributed in the country. MHLW receives application and requests the Food Safety COmmission of Japan (FSCJ) to evaluate the safety of GM foods in terms of human health. Safety assessments are carried out by FSCJ.
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Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
BASF (Malaysia) Sdn. Bhd. |
Summary of application: |
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Date of authorization: |
30/03/2017 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
Department of Biosafety Malaysia
CBD Biosafety Clearing House
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Summary of the safety assessment (food safety): |
Please refer to the Risk Assessment Report |
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E-mail:
Organization/agency name (Full name): Department of Biosafety Malaysia
Contact person name: Dr. Anita Anthonysamy
Website:
Physical full address: Department of Biosafety,
Ministry of Natural Resources and Environmental Sustainability
Level 4, Block F11, Complex F
Lebuh Perdana Timur, Precinct 1
62000 Putrajaya, Malaysia
Phone number: +60380917322
Fax number: +60380917371
Country introduction: GM food safety assessment is a requirement by law under the Biosafety Act 2007 in Malaysia. The National Biosafety Board reviews and makes decisions on events based on a scientific/technical risk assessment, policy considerations as well as public input. The decisions and its related documents made are publicly available through the Malaysian Department of Biosafety Website and the Convention of Biological Diversity Biosafety Clearing House.
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Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Department of Biosafety, Ministry of Natural Resources and Environmental Sustainability, Level 4, Block F11, Complex F Lebuh Perdana Timur, Precinct 1 62000 Putrajaya, Malaysia. Email: [email protected]. Url: www. biosafety.gov.my
Food Safety and Quality Division, Ministry of Health, Level 4, Menara Prisma, No. 26, Persiaran Perdana, Putrajaya, Malaysia, 62675. Phone: +603 88850797 Fax: +603 88850790 Email: [email protected]
Name of product applicant: |
Bayer CropScience Pty Ltd |
Summary of application: |
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Date of authorization: |
06/04/2006 |
Scope of authorization: |
Food |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
OECD BioTrack Product Database
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Summary of the safety assessment (food safety): |
Food from cotton line LL25 has been evaluated according to the safety assessment guidelines prepared by FSANZ. The safety assessment included the following:
• a detailed characterisation of the genetic modification to the plant;
• a consideration of the safety of any transferred antibiotic resistance genes;
• characterisation of any novel proteins, including their potential toxicity and allergenicity;
• a consideration of the composition and nutritional adequacy of the food, including
whether there had been any unintended changes to the food.
The Applicant submitted a comprehensive data package in support of their application and provided studies on the molecular characterisation of cotton line LL25, the potential toxicity and allergenicity of the PAT protein, compositional analyses of food derived from cotton line LL25, and animal feeding studies to demonstrate the nutritional adequacy of the food. In addition to information supplied by the Applicant, the evaluation also had regard to other available information and evidence, including from the scientific literature, general technical information, other regulatory agencies and international bodies.
No potential public health and safety concerns were identified in the assessment of food from cotton line LL25. Therefore, on the basis of all the available evidence, including detailed studies provided by the Applicant, it has been concluded that food derived from cotton line LL25 is as safe and wholesome as food derived from other cotton varieties. |
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Application A533 - Food Derived from Glufosinate-Ammonium-Tolerant Cotton Line LL25
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Organization/agency name (Full name): Ministry for Primary Industries
Contact person name: john vandenbeuken
Website:
Physical full address: Pastoral House, 25 The Terrace, Wellington, 6012
Phone number: 0298942581
Fax number:
Country introduction: New Zealand and Australia share a joint food regulation system for the composition of labelling of most foods. Food Standards Australia New Zealand (FSANZ) is the regulatory agency responsible for the development of the joint food standards in Australia and New Zealand. The main office (approximately 120 staff) is located in Canberra (in the Australian Capital Territory) and the smaller New Zealand office (approximately 15 staff) is located in Wellington on the North Island.
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Stacked events: FSANZ does not: Separately assess food from stacked event lines where food from the GM parents has already been approved; Mandate notification of stacked events by developers; Notify the public of stacked event ‘approvals’; List food derived from stacked event lines in the Code, unless the stacked event line has been separately assessed as a single line e.g. Application A518: MXB-13 cotton (DAS-21023-5 x DAS-24236-5)
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
BASF Philippines |
Summary of application: |
Bayer CropScience has developed LLCotton25 event (designated by the OECD unique identifier code as ACS-GHØØ1-3). LLCotton25 expresses the phosphinothricin acetyltransferase (PAT) protein, encoded by the bar gene from Streptomyces hygroscopicus, a common soil microorganism not known to be a human, animal or plant pathogen. PAT specifically acetylates glufosinate ammonium and thereby detoxifies the herbicide, conferring LLCotton25 tolerance to the herbicide glufosinate ammonium.
Although a minor component of dietary daily intake, cotton by-products are consumed by humans as food (e.g. cottonseed oil) or food ingredients (e.g. cottonseed fatty acids, cooked and partially de-fatted cottonseed flour, cottonseed linters). In addition, cottonseed meal is rich in proteins (about 42% of dry matter) and therefore widely used as animal feed. Seeds from genetically modified LLCotton25 will be used as food or feed in a similar manner to conventional non-transgenic cotton.
To assess whether LLCotton25 would present any risk to human and animal health, a comprehensive safety assessment was conducted according to the most recent guidelines developed by the Organization for Economic Cooperation and Development (OECD), the Codex Alimentarius, and the European Food Safety Authority (EFSA). Comparisons of the chemical composition of key nutritional elements between LLCotton25 and the conventional counterpart cotton confirm equivalence. Substantial equivalence has been demonstrated for the crop plant phenotype in side-by-side comparison with the conventional counterpart, cotton variety Coker312. Close correspondence was confirmed by evaluation of the parameters associated with seed quality and the morphological characteristics. Substantial equivalence has also been demonstrated for the food properties of the seed derived from LLCotton25 plants. Comparisons of the chemical composition of key nutritional elements between transgenic and non-transgenic cotton confirm equivalence. An examination of the nature of the PAT protein raised no safety concerns. The presence of PAT in the food and feed supply does not represent a potential risk. The enzymatic properties are within the range of biological function and are highly substrate specific for the herbicide glufosinate ammonium. A battery of tests designed to evaluate the PAT protein for characteristics associated with food allergens and toxins raised no concern. The PAT protein shares no sequence homology with known allergens and toxins and is not stable in digestive environments. An acute toxicity test in mice found no adverse effects from exposure to a high dose of the PAT protein.
Based on comprehensive safety assessment, it is concluded that LLCotton25 presents no toxicological and allergenic concerns to humans and animals. No adverse effects on the health of humans or animals are expected from the consumption of LLCotton25 cottonseed products if used in a similar way to conventional cotton. LLCotton25 is considered as safe and nutritious as its counterparts.
In compliance with Section 22(B) Article VII (Direct Use of Regulated Articles for Food and Feed, Or for Processing) of the JDC 01-2016, Bayer CropScience has published a copy of the approved PIS for Direct Use as FFP in Manila Bulletin and Manila Standard in its issue last March 23, 2017.
The assessment for the safety of the novel proteins for Direct Use as FFP, under the JDC 01-2016 follows the Codex Safety Assessment of Foods Derived from Recombinant DNA, and thus included: description of the host organism, transgenic plant, donor organisms, transformation system, inserted DNA, genetic stability, and expressed material. Safety assessment of expressed substances also included assessment of possible toxicity, allergenicity, and compositional analyses of key components.
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Date of authorization: |
22/10/2018 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
A. STRP, BAI, BPI-PPSSD Assessment and Recommendation
Based on the documents submitted by the applicant:
1. Host Organism
The assessors’ concurred cotton contains nutrients that are used in human and animal feeding, principally, oil and protein. Cottonseed contains several minerals, vitamins, amino acids and fatty acids. Cotton contains antinutrients such as cyclopropenoid fatty acids (CPFA), including sterculic, dehydrosterculic, and malvalic acids.
Cotton contains terpenoid phytoalexins. These phytoalexins are antibiotics found in cotton and it plays a role in resistance of the plant to diseases. Terpenoid phytoalexins include gossypol, hemigossypol, desoxyhemigossypol, 2, 7-dihydroxy cadalene, hemigossypolone and heliocides H1 and H2. Gossypol is the most common and it is toxic to non-ruminants and has male sterility properties. The free gossypol is the toxic form with toxicity of 24 mg per head per day. The maximum amount of gossypol that should be fed to dairy cows should be 18 mg. Both cottonseed oil and meal are not sources of allergens.
Raw cottonseed is not used for food. It needs to be processed first before it becomes available for consumption of both human and livestock. It is an important source of vegetable oil for making various food preparations. There is no data on Philippine consumption of cottonseed oil and meal.
2. Transgenic Plant
LLCotton25 has been approved for food and feed use in the USA, Argentina, Brazil, Canada, China, EU, Japan, Malaysia, South Africa, and South Korea. On the other hand, it was also approved solely for food in Australia, Mexico, New Zealand and Taiwan, and solely for feed in Colombia. Consumption patterns are not expected to change as a result of the introduction of the novel trait as cottonseed derived from GHB119 Cotton is nutritionally and substantially equivalent to cotton derived from conventional breeding practices.
3. Donor Organism
The glufosinate tolerant cotton event LLCotton25 contains a single genetic insert of the bar gene. The bar gene encodes an enzyme that confers the phenotype of tolerance to herbicides containing glufosinate-ammonium as their active ingredient. The bar gene isolated from S. hygroscopicus encodes the enzyme phosphinothricin acetyltransferase (PAT) which confers resistance to the phytotoxic activity of glufosinate-ammonium.
All inserted regulatory sequences have been adequately described. The developer provided sufficient information regarding the introduced expressible sequences. Southern blot hybridization show that the only expressible sequence is the bar gene from S. hygroscopicus. Streptomyces hygroscopicus is neither toxic nor allergenic.
The only new protein encoded by the bar gene from S. hygroscopicus is PAT. Several in silico findings showed that the protein associated with the pat/bar protein is neither toxic nor allergenic.
4. Transformation System
The transformation method is Agrobacterium-mediated. The target of modification was the nucleus of recipient variety Coker 312. The genetic elements and their characteristics are well described. The map of the plasmid vector pGSV1 was presented including the qualitative PCR method for cotton event LLCotton25. No carrier DNA or helper plasmids were used in the process.
5. Inserted DNA
The schematic drawing of the LLCotton25 transgenic locus in relation with the wild type pre-insertion locus was presented demonstrating one insertion site. LLCotton25 transgenic locus and pre-insertion locus were determined. Pairwise alignment between the transgenic and pre-insertion locus sequence revealed no differences between the homologous sequences. The one insertion site was demonstrated sufficiently. Southern blot hybridization demonstrated that the transferred DNA corresponds to the DNA configuration as designed in the pGSV71 plasmid.
There were no truncations, deletions, rearrangements identified/determined. BLAST analysis of the LLCotton25 insertion locus sequence using the Gossypium hirsutum genomic reference database shows that the sequence originates from cotton chromosome D06.
Aside from cotton, the transgene has been approved in maize, rice, canola and soybean. Results of Southern blot analyses demonstrated the absence of vector backbone sequences in the transformation cotton event LLCotton25.
6. Genetic Stability
The stability of LLCotton25 was demonstrated by Southern blot analyses conducted in different genetic background, different environment and over different generations. The result obtained demonstrates the stability of LLCotton25 at the genomic level in multiple genetic backgrounds, over multiple generations when grown in different environments. Mendelian Principle of Inheritance was used to assess the segregation using multiple backcross generations.
7. Expressed Material
The amount of phosphinothricin acetyltransferase (PAT) protein in 4 plant parts such as roots, stems, leaves, and pollen of LLCotton25 was determined. Results are shown in Tabulated form indicating the averages and ranges in PAT protein contents. The novel protein has no metabolic role since acetylation of the PAT protein expresses tolerance to glufosinate ammonium containing herbicide and not as having herbicidal activity. The study used an in vitro simulated gastro-intestinal condition. However, there is also an in vivo study in mice to support the results obtained from the in vitro studies.
SDS PAGE and Western blot hybridization analyses showed that the PAT/bar protein was heat stable up to 60 min at 90⁰C. Homology search with general protein database showed mainly similarities with other acetyl transferases from various bacterial origin. None of the matches obtained from the toxin database can be considered biologically relevant. Results of acute toxicity test of PAT/bar protein in mice showed no adverse effects even administered at 2000 mg/kg body weight, demonstrating that PAT/bar protein from transgenic cotton event LLCotton25 is as safe as the conventional cotton counterpart.
Results of analytical test showed that the PAT/bar protein produced in E. coli is equivalent to PAT/bar protein produced in LLCotton25. Digestibility of PAT in SIF and SGF used the enzymes pancreatin at pH 7.5 and pepsin at pH 1.2, respectively. After digestion, no visible fragment was seen in SIF with pancreatin while a 10% remaining fragment was observed in SGF with pepsin. SDS-PAGE and Western Blot analysis showed similar results in half life at 30 seconds of incubation. PAT protein has no relevant homology with any known allergen.
No detectable PAT protein in both crude and food grade oil produced from LLCotton25 seed was observed. Serum screening was not performed.
8. Toxicological Assessment
Using the internationally recommended protocol in digestibility study, the test protein, PAT/bar protein from E. coli was tested for stability in human simulated gastric fluid (SGF) with pH 1.2 and for incubation times from 0.5 to 60 minutes at approximately 37⁰C. PAT/bar protein tested for heat stability was found to be heat stable when incubated up to 60 minutes at 90⁰C. The protein was examined after SDS-PAGE by Coomassie blue staining and by Western blot analyses using a specific polyclonal rabbit anti-PAT/bar protein antibody.
Homology search with general protein database showed mainly similarities with other acetyltransferases from various bacterial origin. None of the matches obtained from the toxin database can be considered biologically relevant. Results of acute toxicity test of PAT/bar protein in mice showed no adverse effects even administered at 2000 mg/kg body weight, demonstrating that PAT/bar protein from transgenic cotton event LLCotton25 is as safe as the conventional cotton counterpart. The test protein was produced from Escherichia coli.
9. Allergenicity Assessment
Digestibility of PAT in SIF and SGF used the enzymes pancreatin at pH 7.5 and pepsin at pH 1.2, respectively. After digestion, no visible fragment was seen in SIF with pancreatin while a 10% remaining fragment was observed in SGF with pepsin. SDS-PAGE and Western Blot analysis showed similar results in half-life at 30 seconds of incubation. PAT/bar protein was heat stable up to 60 minutes at 90⁰C. The protein was examined after SDS-PAGE by Coomassie blue staining and by Western blot analyses using a specific polyclonal rabbit anti-PAT/bar protein anti-body. PAT protein has no relevant homology with any known allergen. PAT protein has no identified potential N-glycosylation site which indicates that it is not glycosylated.
For raw agricultural products, more than 99% of the PAT protein was found in the kernel fractions of cottonseeds. Seed cotton and delinted cottonseed contain an average of 32.1 ug/g and 114 ug/g of PAT protein, respectively. Serum screening was not performed.
10. Nutritional Data
There were no significant differences between the modified product and the conventional product and were more pronounced for protein and crude fiber. The developer provided information on the comparison between the parent line Coker 312 and the GM LLCotton25. Treatments were grown in the same environmental conditions. Comparisons with ranges of commercial varieties were within the range. A comparison of the proximate and fibre results obtained from lint sample analyses was not possible, since no reference values were found.
The key nutrients were limited to minerals, vitamins, total amino acids and total fatty acids. No significant differences were found between conventional and modified product. The LLCotton25 was compared using the non-GM parent line Coker312. Most of the mean values for key nutrients were within the literature range except for the palmitic acid value of the transgenic plant analyzed by the Covance Lab which falls slightly below the literature range but still within the reference range of published values for cotton seed oil standards of Codex Alimentarius. The LLCotton25 nutritional values were statistically similar with the profile of the non-GM variety of cottonseed.
During the long history of use, no adverse effects to human and animal have been attributed to the residual toxicant (gossypol) in properly processed, refined, bleached and deodorized cottonseed oil, hence no health risk. |
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October 21, 2023 |
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Organization/agency name (Full name): Bureau of Plant Industry
Contact person name: Geronima P. Eusebio
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Physical full address: San Andres St., Malate, Manila
Phone number: 632 404 0409 loc 203
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Country introduction: In 1987, scientists from the University of the Philippines Los Banos (UPLB) and the International Rice Research Institute (IRRI), the Quarantine Officer of the Bureau of Plant Industry (BPI), and the Director for Crops of the Philippine Council for Agriculture, Forestry and Natural Resources Research and Development (PCARRD), recognizing the potential harm of the introduction of exotic species and genetic engineering, formed a committee and formulated the biosafety protocols and guidelines for genetic engineering and related research activities for UPLB and IRRI researchers. The committee went on to draft a Philippine biosafety policy, which was submitted to the Office of the President. On October 15, 1990, recognizing the potential for modern biotechnology both in improving the lives of the people and in creating hazards if not handled properly, President Corazon C. Aquino issued Executive Order 430 creating the National Committee on Biosafety of the Philippines (NCBP) that will formulate, review and amend national policy on biosafety and formulate guidelines on the conduct of activities on genetic engineering. The NCBP is comprised of representative of the Departments of Agriculture (DA); Environment and Natural Resources (DENR); Health (DOH); and Science and Technology (DOST), 4 scientists in biology, environmental science, social science and physical science; and 2 respected members of the community. On July 16, 2001, President Gloria Macapagal-Arroyo issued the Policy Statement on Modern Biotechnology, reiterating the government policy on promoting the safe and responsible use of modern biotechnology. On April 3, 2002, Department of Agriculture Administrative Order No. 8, Series of 2002 was issued implementing the guidelines for importation and release into the environment of Plants and Plant Products Derived from the Use of Modern Biotechnology. On March 17, 2006, President Gloria Macapagal-Arroyo issued Executive Order No.514 Establishing the National Biosafety Framework, prescribing guidelines for its implementation, reorganizing the National Committee on Biosafety of the Philippines, and for other purposes. On December 8, 2015, the Philippine Supreme Court declared DA AO8 null and void and any application for contained use, field testing, propagation and commercialization, and importation of GMOs was temporarily enjoined. In response to the nullification of DA AO8, the Technical Working Group composed of representatives from the Departments of Agriculture (DA), Science and Technology (DOST), Environment and Natural Resources (DENR), Health (DOH), and Interior and Local Government (DILG) drafted the Joint Department Circular No. 1, Series of 2016 (JDC No.1, S2016) titled 'Rules and Regulations for the Research and Development, Handling and Use, Transboundary Movement, Release into the Environment, and Management of Genetically-Modified Plant and Plant Products Derived from the Use of Modern Biotechnology'. There were series of meeting and five public consultations conducted before the JDC No.1, S2016 was approved and signed by the Secretaries of the abovementioned agencies on March 7, 2016 and took effect on April 15, 2016. Under this Circular, more government agencies were involved such as the Department of Science and Technology (DOST) to regulate applications for contained use and confined test of regulated articles; Department of Agriculture (DA) to evaluate applications for field trial, commercial propagation and transboundary movement of regulated articles; Department of Environment and Natural Resources (DENR) to evaluate environmental risks and impacts of regulated articles; Department of Health (DOH) to evaluate of environmental health impacts of regulated articles; and Department of the Interior and Local Government (DILG) to supervise public consultation during field trial.
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Stacked events: Gene stacking in plants can be conferred either through genetic engineering or conventional breeding A full risk assessment as to food and feed or for processing shall be conducted to plant products carrying stacked genes conferred through genetic engineering or conventional breeding, where the individual traits have no prior approval for direct use as food and feed or processing from the Bureau of Plant Industry (BPI) A desktop or documentary risk assessment on the possible or expected interactions between the genes shall be conducted for stacked gene products with multiple traits conferred through conventional breeding and individual events granted prior approval by the Bureau of Plant Industry.
Plant Products Carrying Stacked Genes Conferred Through (a) Genetic Engineering or b) Conventional Breeding, with Individual Traits That Have No Prior Approval:
A full risk assessnent as to food and feed or processing shall be conducted,consistent with Part V of AO No. 8,"Approval Process For the Importation of Regulated Articles for Direct Use as Food and Feed or For Processing for plant products with multiple traits conferred through:
(a) genetic engineering, or
(b) conventional breeding, where the individual traits have no prior approval from the Bureau of Plant Industry (BPI) for direct use as food and feed or processing.
Plant Products Carrying Stacked Genes Conferred through Conventional Breeding:
For plant products with multiple traits conferred through conventional breeding,with all individual events granted prior approval and included in the Approval Registry, a notlfication shall be submitted by the technology developer to the BPI, which shall conduct an evaluation in accordance with the relevant criteria in Annex I of this Memorandum Circular. The list of data contained in Annex I will not preclude the inclusion of other issues and concerns that will be raised by the BPI and the Scientific and Technical Review Panel (STRP) during the course of the desktop review.
Notificatlon Requirement for Plant Products Carrying Stacked Genes
All technology developers shall submit a notification to the Bureau of Plant Industry of their developed plant products carrying stacked genes and shall be required to comply with the relevant approval process listed above.
The Bureau of Plant Industry shall issue a certiflcate as to the approval of the stacked gene product and shall likewise include the transformation event in the official approval registry of plant products for food and feed or processing.
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Bureau of Plant Industry 692 San Andres St, Malate, Manila 1004
Name of product applicant: |
Bayer Korea Ltd. |
Summary of application: |
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Date of authorization: |
08/12/2005 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
Please see the link below(in Korean).
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Organization/agency name (Full name): Ministry of Food and Drug Safety
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Physical full address: Osong Health Technology Administration Complex, 187, Osongsaengmyeong 2-ro, Osong-eup, Cheongwon-gun, Chungcheonbuk-do, 363-700, Korea
Phone number: 82-43-719-2360
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Stacked events:
Contact details of the competent authority(s) responsible for the safety assessment and the product applicant:
Name of product applicant: |
Bayer CropScience |
Summary of application: |
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Date of authorization: |
02/11/2020 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
Cotton line LL25 (ACS-GH001-3) has been genetically modified to tolerate glufosinate ammonium through the transfer of the bar gene (derived from S. hygroscopius) to the non-transgenic cotton line Coker 312. The bar gene encodes the phosphinothricin acetyltransferase (PAT) enzyme that confers tolerance to glufosinate ammonium (phosphinothricin). The transferred bar gene is stably integrated into the plant genome at a single insertion site and is stably inherited from one generation to the next. PAT protein is expressed at low levels or is undetectable in the cotton and their processed fractions and therefore exposure to the protein through consumption of food derived from cotton line LL25 would be negligible. PAT is non-toxic to humans and has limited potential as a food allergen. Compositional analysis showed that food from cotton line LL25 is equivalent in composition to that from other commercial cotton varieties. Food from the cotton line LL25 is considered as safe as food produced from other cotton varieties. |
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Organization/agency name (Full name): Singapore Food Agency (SFA)
Contact person name: Dr Tan Yong Quan
Website:
Physical full address: 52 Jurong Gateway Road 14-01 JEM Office Tower Singapore 608550
Phone number: (65)68052750
Fax number:
Country introduction: The Singapore Food Agency (SFA) is a Statutory Board established under the Ministry of Sustainability and the Environment (MSE) to oversee food safety and security. SFA’s mission is to ensure and secure a supply of safe food. SFA adopts a risk-based approach to food safety. Foods with foodborne hazards that may pose potential food safety risks to consumers are subjected to more stringent checks, regardless of their country of origin. SFA has in place an integrated system to ensure that both imported and domestically produced foods are safe for consumption. The system comprises control measures such as source accreditation, inspection and surveillance of food, laboratory analysis, food legislation and recall of food products, which safeguard food safety from farm to fork.
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Contact details of the competent authority(s) responsible for the safety assessment and the product applicant: Singapore Food Agency (SFA)
Name of product applicant: |
Bayer CropScience USA LP |
Summary of application: |
Cotton
Trait 1 Added Protein: Phosphinothricin-N-acetyltransferase (PAT)
Source: Streptomyces hygroscopicus
Intended Effect: Tolerance to the herbicide glufosinate-ammonium
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Date of authorization: |
02/04/2003 |
Scope of authorization: |
Food and feed |
Links to the information on the same product in other databases maintained by relevant international organizations, as appropriate. (We recommend providing links to only those databases to which your country has officially contributed.): |
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Summary of the safety assessment (food safety): |
Please consult the FDA website links below. |
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FDA's webpage regarding this variety
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Organization/agency name (Full name): Food and Drug Administration
Contact person name: Jason Dietz
Website:
Physical full address: 5100 Paint Branch Parkway, College Park MD 20740
Phone number: 240-402-2282
Fax number:
Country introduction: The United States is currently in the process of populating this database. The Food and Drug Administration regulates food and feed (food for humans and animals) from genetically engineered crops in conjunction with the Environmental Protection Agency (EPA). EPA regulates pesticides, including those that are plant incorporated protectants genetically engineered into food crops, to make sure that pesticide residues are safe for human and animal consumption and do not pose unreasonable risks of harm to human health or the environment. FDA In the Federal Register of May 29, 1992 (57 FR 22984), FDA published its "Statement of Policy: Foods Derived from New Plant Varieties" (the 1992 policy). The 1992 policy clarified the agency's interpretation of the application of the Federal Food, Drug, and Cosmetic Act with respect to human and animal foods derived from new plant varieties and provided guidance to industry on scientific and regulatory issues related to these foods. The 1992 policy applied to all foods derived from all new plant varieties, including varieties that are developed using genetic engineering (also known as recombinant deoxyribonucleic acid (rDNA) technology). In the 1992 policy, FDA recommended that developers consult with FDA about foods from genetically engineered plants under development and developers have routinely done so. In June 1996, FDA provided additional guidance to industry on procedures for these consultations (the consultation procedures). These procedures describe a process in which a developer who intends to commercialize food from a genetically engineered plant meets with the agency to identify and discuss relevant safety, nutritional, or other regulatory issues regarding the genetically engineered food and then submits to FDA a summary of its scientific and regulatory assessment of the food. FDA evaluates the submission and if FDA has questions about the summary provided, it requests clarification from the developer. At the conclusion of the consultation FDA responds to the developer by letter. The approach to the safety assessment of genetically engineered food recommended by FDA during consultations, including data and information evaluated, is consistent with that described in the Codex Alimentarius Guideline for the Conduct of Food Safety Assessment of Foods Derived from Recombinant-DNA Plants. EPA The safe use of pesticidal substances is regulated by EPA. Food from a genetically engineered plant that is the subject of a consultation with FDA may contain an introduced pesticidal substance, also known as a plant-incorporated protectant (PIP), that is subject to food (food for humans and animals) safety and environmental review by EPA. PIPs are pesticidal substances produced by plants and the genetic material necessary for the plant to produce the substance. Both the PIP protein and its genetic material are regulated by EPA. When assessing the potential risks of PIPs, EPA requires studies examining numerous factors, such as risks to human health, non-target organisms and the environment, potential for gene flow, and insect resistance management plans, if needed. In regulating PIPs, decisions are based on scientific standards and input from academia, industry, other Federal agencies, and the public. Before the first PIP product was registered in 1995, EPA required that PIP products be thoroughly tested against human safety standards before they were used on human food and livestock feed crops. EPA scientists assessed a wide variety of potential effects associated with the use of PIPs, including toxicity, and allergenicity. These potential effects were evaluated in light of the public's potential exposures to these pesticides, taking into account all potential combined sources of the exposure (food, drinking water, etc.) to determine the likelihood that a person exposed at these levels would be predisposed to a health risk. Based on its reviews of the scientific studies and often peer reviews by the Federal Insecticide, Fungicide and Rodenticide Scientific Advisory Panel, EPA determined that these genetically engineered PIP products, when used in accordance with approved label directions and use restrictions, would not pose unreasonable risk to human health and the environment during their time-limited registration.
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Stacked events: Stacked events that are each plant incorporated protectants, as defined by the Environmental Protection Agency, must be registered by the Envriornmental Protection Agency before they can be commercialized. Food/feed safety asssessment of single events are generally sufficient to ensure the safety of food/feed from stacked events.
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