GM Crop Database

Database Product Description

MON863 x MON810 x NK603 (MON-ØØ863-5 x MON-ØØ81Ø-6 x MON-ØØ6Ø3-6)
Host Organism
Zea mays (Maize)
Trait

Herbicide tolerant, glyphosate; Insect resistant, Coleoptera; Insect resistant, Lepidoptera.

Trait Introduction
Traditional plant breeding and selection
Proposed Use

Production for human consumption and livestock feed.

Product Developer
Monsanto Company

Summary of Regulatory Approvals

Country Food Feed Environment Notes
Canada 2004
European Union 2010 2010
Japan 2004 2004 2004
Korea 2004
Mexico 2006 2006
Philippines 2005 2004
South Africa 2011 2011
Taiwan 2009

Introduction Expand

This stacked maize hybrid is a product of traditional plant breeding, and is therefore not automatically subject to regulation in all countries, unlike transgenic plants resulting from recombinant-DNA technologies. The approvals table above does not include entries from these countries. Other countries may request notification in advance of the release of a stacked hybrid, or may request information to conduct an environmental and food safety assessment, and these countries’ decisions are reflected in the approvals table.

Summary of Introduced Genetic Elements Expand

Code Name Type Promoter, other Terminator Copies Form
nptII neomycin phosphotransferase II SM CaMV 35S A. tumefaciens nopaline synthase (nos) 3'-untranslated region 1 The nptII cassette also contains 153 bp portion of bleomycin binding protein gene
cry3Bb1 cry3Bb1 delta-endotoxin IR 4-AS1 (single CaMV 35S plus four repeats of activating sequence) 5' untranslated leader sequence from wheat chlorphyll a/b binding protein, and rice actin intron 3' untranslated sequence of wheat heat shock protein 17.3 (tahsp17) 1 Addition of alanine residue at position 2 of protein
cry1Ab Cry1Ab delta-endotoxin (Btk HD-1) IR enhanced CaMV 35S, maize HSP70 intron None. Lost through 3' truncation during integration 1 Truncated
CP4 epsps 5-enolpyruvyl shikimate-3-phosphate synthase HT P-ract1/ract1 intron containing rice actin 1 promoter, transcription start site chloroplast transit peptide from A. thaliana EPSPS gene (CTP2) A. tumefaciens nopaline synthase (nos) 3'-untranslated region 1 CP4 EPSPS gene modified for plant-preferred codons
CP4 epsps 5-enolpyruvyl shikimate-3-phosphate synthase HT enhanced CaMV 35S, maize HSP70 intron chloroplast transit peptide from A. thaliana EPSPS gene (CTP2) A. tumefaciens nopaline synthase (nos) 3'-untranslated region 1 CP4 EPSPS gene modified for plant-preferred codons

Characteristics of Zea mays (Maize) Expand

Center of Origin Reproduction Toxins Allergenicity

Mesoamerican region, now Mexico and Central America

Cross-pollination via wind-borne pollen is limited, pollen viability is about 30 minutes. Hybridization reported with teosinte species and rarely with members of the genus Tripsacum.

No endogenous toxins or significant levels of antinutritional factors.

Although some reported cases of maize allergy, protein(s) responsible have not been identified.

Donor Organism Characteristics Expand

Latin Name Gene Pathogenicity
Bacillus thuringiensis subsp. kumamotoensis cry3Bb1 While coleopterans are susceptible to oral doses of Cry3Bb1 protein, there is no evidence of toxic effects in laboratory mammals or birds. There are no significant mammalian toxins or allergens associated with the host organism.
Bacillus thuringiensis subsp. kurstaki EC2.4.2.19

While target insects are susceptible to oral doses of Bt proteins, no evidence of toxic effects in laboratory mammals or birds given up to 10 µg protein/g body weight.

Agrobacterium tumefaciens strain CP4 CP4 epsps

Agrobacterium tumefaciens is a common soil bacterium that is responsible for causing crown gall disease in susceptible plants. There have been no reports of adverse effects on humans or animals.

Modification Method Expand

Coming soon. 

Characteristics of the Modification Expand

Coming soon. 

Environmental Safety Considerations Expand

Coming soon. 

Food and/or Feed Safety Considerations Expand

Coming soon. 

Abstract Collapse

MON863 X MON810 X NK603 (OECD identifier: MON-ØØ863-5 x MON-ØØ81Ø-6 x MON-ØØ6Ø3-6) maize is an F1 hybrid resulting from the hybridization of the insect-resistant stacked maize inbred line MON863 X MON810 (MON-ØØ863-5 x MON-ØØ81Ø-6), and the herbicide tolerant inbred line NK603 (MON-ØØ6Ø3-6). This F1 stacked hybrid is resistant to coleopterans, such as the Corn Rootworm, lepidopterans, such as the European Corn Borer, and is tolerant to the herbicide glyphosate. MON863 X MON810 X NK603 is a product of traditional plant breeding, and therefore is not automatically subject to regulation in all jurisdictions as are transgenic plants resulting from recombinant DNA technologies. Certain jurisdictions may request notification in advance of the release of a stacked hybrid, or may request information to conduct an environmental and food safety assessment. Examples of jurisdictions that require either notification or information about stacked hybrids prior to their release into the environment, and for use in human food and livestock feed are Canada and Japan.

The stacked hybrid MON863 X MON810 X NK603 expresses two novel insecticidal proteins: Cry3Bb1, a delta-endotoxin which confers resistance to coleopterans such as the Corn Rootworm, and the delta-endotoxin Cry1Ab which confers resistance to lepidopterans, such as the European Corn Borer. The stacked hybrid also expresses the novel protein CP4 EPSPS which confers glyphosate tolerance. Cry3Bb1 is produced by the cry3Bb1 gene from MON863, and Cry1Ab, by the cry1Ab gene from MON810. The CP4 EPSPS protein is produced by the cp4epsps gene from NK603. The novel traits of each parent line have been combined, using traditional plant breeding methods, to produce this new hybrid. For a full description of each parent line please refer to the individual product descriptions in the crop database for MON863, MON810, and NK603.
The inserted genes and their gene products have a history of safe use, and have undergone review and approval by several regulatory agencies. No interactions among the gene products or negative synergistic effects are expected in the stacked hybrid. Neither Cry1Ab, nor Cry3Bb1 are enzymes and therefore have no effect on plant metabolism. The CP4 EPSPS has high affinity for its substrates phosphoenolpyruvate (PEP) and shikimate-3-phosphate, which are part of the shikimate metabolic pathway. CP4 EPSPS, Cry1Ab and Cry3Bb1 are therefore not expected to interact within, nor affect the metabolism of the stacked hybrid.
Studies were conducted to compare the resistance to coleopterans and lepidopterans in the stacked hybrid with each parental line. There were no statistically significant differences in the levels of resistance to the target insects between the stacked hybrid and either of the parental lines, MON 863 and MON810. Non-target insects that were found to be unaffected by the insecticidal proteins in MON863 and MON810 were also unaffected by the combination of the proteins in the stacked hybrid. Thus, the hybridization of MON863 and MON810 did not affect the expression levels of the cry1Ab and cry3Bb genes, and there was no observed synergistic effect of simultaneous exposure to both proteins.
Studies were also conducted to compare the tolerance to glyphosate between the stacked cotton line and each parental line. There were no significant differences in the tolerance to applications of glyphosate in the stacked line, compared to the parental lines.
Heterosis is expected in F1 hybrids. An example of heterosis is a substantial increase in yield in the F1 hybrid compared to the parental lines. The stacked hybrid NK603 X MON810 is therefore expected to display heterosis, as would any conventional F1 hybrid. Heterosis in this hybrid is not expected to be caused by the introduced genes, since the gene products are not expected to interact synergistically.

Links to Further Information Expand


This record was last modified on Monday, July 11, 2016