Transgenic plants and methods for production thereof

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 1/04 (2006.01) A01H 4/00 (2006.01) C12N 15/31 (2006.01)

Patent

CA 2354185

Genetic constructs, transformation vectors and methods are taught for production of transgenic plants which can be selectively removed from a growing site by application of a chemical agent or physiological stress. The invention links a target gene for the trait of commercial interest to a conditionally lethal gene, which can be selectively expressed to cause plant death. By use of the genetic constructs, transformation vectors and methods of the present invention, invasion of environments and contamination of commercial non-engineered productions by transgenic plants can be avoided. Methods are also taught for transformation of Brassica species.

Des produits de synthèse génétique, des vecteurs de transformation et des procédés de transformation sont présentés pour la production de plantes transgéniques qui peuvent être sélectivement retirées d'un site de croissance par application d'un agent chimique ou d'une contrainte physiologique. Cette invention associe un gène cible pour sa caractéristique d'intérêt commercial à un gène létal sous conditions, qui peut être sélectivement exprimé pour provoquer la mort végétale. En utilisant ces produits de synthèse génétique, ces vecteurs de transformation et ces procédés de transformation, on peut éviter l'invasion de milieux ambiants et la contamination de productions commerciales non modifiées génétiquement de la part de plantes transgéniques. Des procédés sont présentés pour la transformation de l'espèce Brassica.

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