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Organisme vivant modifié (LMO)
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BCH-LMO-SCBD-293846-1   |   PDF   |   Imprimer   |  
Identité de l’organisme vivant modifié
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Enhanced grain yield potential, glufosinate-ammonium resistant, Enlist™ maize
EN
DP202216 x DAS40278
Oui
DP-2Ø2216-6 x DAS-4Ø278-9
The maize (Zea mays) was produced through cross breeding of modified parental varieties DP202216 and DAS40278. Maize DP202216 was genetically modified to confer increased yield potential and tolerance to glufosinate herbicide.  Increased yield is associated with the constitutive expression of the Zea mays zmm28 gene, which encodes a MADS-box transcription factor involved in the regulation of genes associated with photosynthesis, nitrogen assimilation and carbon metabolism. Its expression may also influence auxin and gibberellin signalling pathways. The modified phenotype includes increased plant height during vegetative growth, as well as greater leaf biomass and total leaf area. Tolerance to glufosinate is conferred by expression of the pat gene from Streptomyces viridochromogenes, encoding phosphinothricin acetyltransferase, which detoxifies glufosinate by acetylation. For tolerance to aryloxyphenoxypropionate and 2,4-dichlorophenoxyacetic acid herbicides (acetyl‐CoA carboxylase inhibitors), the modified maize expresses Sphingobium herbicidovorans aryloxyalkanoate dioxygenase (AAD-1), which cleaves 2,4-dichlorophenoxyacetic acid into non-herbicidal dichlorophenol and glyoxylate, as well as inactivates aryloxyphenoxypropionate herbicides (acetyl‐CoA carboxylase inhibitors). 
EN
Le terme « organisme récepteur » désigne un organisme (non modifié ou déjà modifié) ayant fait l'objet d'une modification génétique, tandis que les « organismes parentaux » désignent les organismes impliqués dans un croisement ou une fusion cellulaire pour générer un organisme modifié.
  • BCH-ORGA-SCBD-246-6 Organisme Zea mays (Maize, Corn, MAIZE)
    Cultures
  • BCH-LMO-SCBD-115791-1 Organisme vivant modifié DP-2Ø2216-6 - Enhanced grain yield potential and Glufosinate-ammonium resistant maize
    Pioneer Hi-Bred International Inc. | Changements dans la physiologie et/ou la production (Production), Increased nitrogen assimilation, Increased photosynthetic capacity, Résistance aux herbicides (Glufosinate)
  • BCH-LMO-SCBD-104814-2 Organisme vivant modifié DAS-4Ø278-9 - Enlist™ Maize
    Dow AgroSciences GmbH | Résistance aux herbicides, Tolerance to 2,4-Dichlorophenoxyacetic acid, Tolerance to aryloxyphenoxypropionate
FR
Caractéristiques du processus de modification
PHP40099 and pDAS1740
EN
  • Transgénèse par agrobacterium
  • Croisement
  • Autres (silicon carbide whisker fibres)
Certains de ces éléments génétiques peuvent être présents sous forme de fragments ou sous forme tronquée. Veuillez consulter les notes ci-dessous, s’il y a lieu.
  • BCH-GENE-SCBD-104795-4 RB7 matrix attachment region | Nicotiana tabacum (Tobacco, TOBAC )
    Enhancer
  • BCH-GENE-SCBD-100362-7 Ubiquitin gene promoter | Zea mays (Maize, Corn, MAIZE)
    Promoteur
  • BCH-GENE-SCBD-115789-1 gos2 promoter | Zea mays (Maize, Corn, MAIZE)
    Promoteur
  • BCH-GENE-SCBD-115790-1 MADS-box transcription factor zmm28 | Zea mays (Maize, Corn, MAIZE)
    Séquence codante de protéines | Changements dans la physiologie et/ou la production (Production)
  • BCH-GENE-SCBD-104812-3 Aryloxyalkanoate dioxygenase gene | Sphingobium herbicidovorans (SPHHE)
    Séquence codante de protéines | Résistance aux herbicides,Tolerance to 2,4-Dichlorophenoxyacetic acid,Tolerance to aryloxyphenoxypropionate
  • BCH-GENE-SCBD-104813-4 Per5 3' Untranslated Region | Zea mays (Maize, Corn, MAIZE)
    Terminateur
  • BCH-GENE-SCBD-103927-2 Ubiquitin 5' Untranslated Region | Zea mays (Maize, Corn, MAIZE)
    Leader
  • BCH-GENE-SCBD-103627-5 Ubiquitin Intron 1 | Zea mays (Maize, Corn, MAIZE)
    Intron
  • BCH-GENE-SCBD-100367-4 Proteinase inhibitor II gene terminator | Solanum tuberosum (Potato, SOLTU)
    Terminateur
  • BCH-GENE-SCBD-15002-5 Phosphinothricin N-acetyltransferase | Streptomyces viridochromogenes (STRVR)
    Séquence codante de protéines | Résistance aux herbicides (Glufosinate)
  • BCH-GENE-SCBD-100366-6 CaMV Enhanced 35S promoter | Cauliflower mosaic virus (CaMV)
    Promoteur
  • BCH-GENE-SCBD-100359-7 Hsp70 intron | Zea mays (Maize, Corn, MAIZE)
    Intron
  • BCH-GENE-SCBD-100365-6 Chloroplast transit peptide 2 | Arabidopsis thaliana (Thale cress, Mouse-ear cress, Arabidopsis, ARATH)
    Séquence signal
  • BCH-GENE-SCBD-14979-7 5-enolpyruvylshikimate-3-phosphate synthase gene | Agrobacterium tumefaciens (Agrobacterium)
    Séquence codante de protéines | Résistance aux herbicides (Glyphosate)
  • BCH-GENE-SCBD-100269-8 Nopaline Synthase Gene Terminator | Agrobacterium tumefaciens (Agrobacterium)
    Terminateur
DNA insert from DP202216 (vector PHP40099)
The parental maize contains two gene cassettes: Zea mays MADS-box transcription factor zmm28 and Streptomyces viridochromogenes phosphinothricin N-acetyltransferase (pat).
-Transcription of zmm28 is under control of the Z. mays gos2 promoter and the Solanum tuberosum proteinase inhibitor II gene (pinII) terminator. In addition to the zmm28 coding sequence, a Z. mays ubiquitin 1 intron is present at the 5' end of the transcript to enhance gene expression. The gos2 promoter is expected to promote constitutive expression in all plant tissues.
-Transcription of pat is under control of the Z. mays ubiquitin promoter and the pinII terminator. In addition to the pat coding sequence, the Z. mays ubiquitin 1 5' untranslated region and intron were added to the 5' end to enhance gene expression. The ubiquitin promoter is expected to promote high levels of constitutive expression in all plant tissues.

Note:
- The sequence of zmm28 is comprised of the 5’ UTR at bp 2,749-2,808 (60 bp long), coding sequence at bp 2,809-3,564 (756 bp long) and the 3’ UTR at bp 3,565-3,605 (41 bp long).
- The pat coding sequence was optimized for expression in maize.
- Southern-by-Sequencing analysis indicted that the DP202216 line contained a single T-DNA insertion containing the two gene cassettes without any rearrangements or integration of the vector backbone.

DNA insert from DAS40278 (DAS-4Ø278-9) vector pDAS1740
The parental LMO was generated using the Whiskers-mediated transformation method and contains a Sphingobium herbicidovorans aryloxyalkanoate dioxygenase-1 (aad-1) gene cassette.

The aad-1 coding sequence is under the control of a Zea mays ubiquitin gene promoter and Z. mays root preferential cationic peroxidase terminator. Due to the constitutive nature of the ubiquitin promoter, elevated levels of transcription of this gene cassette are expected to occur.

Note:
  • The aad-1 coding sequence was optimized for expression in the plant.
  • Southern blot analysis indicated that a single complete copy of the transformation cassette was stably integrated into the host genome at a single locus.
  • No integration of the vector backbone occurred.

For more information, kindly refer to the parental LMO records.
EN
Caractéristiques de l’OVM
FR
  • Nourriture pour les animaux
  • Nourriture
Méthode(s) de détection
FR
Informations supplémentaires
FR
Les fichiers qui font référence à ce document Montré dans la recherche
Type de fichier Champs Fichier(s) :
Décision de pays ou tout autre communication Identification de l'OVM 1
Évaluation des risques générée par un processus de réglementation Organisme(s) vivant(s) modifié(s) 1