Compositions and methods for improving plant performance

Details Compositions and methods for improving plant performance Compositions and methods for improving plant performance

C - Chemistry, Metallurgy

12

N

C12N 15/55 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) C12N 15/31 (2006.01) C12N 15/53 (2006.01) C12N 15/54 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2485689

Provided are compositions and methods for improving plant performance including transforming a plant with an isopentenyl transferase, a tryptophan monooxygenase or an indole acetamide hydrolase polynucleotide. Preferably, the plant is transformed with an ipt, iaaM or iaaH oncogene from Agrobacterium tumefaciens operably linked to a developmental stage-preferred promoter or a tissue-preferred promoter. Controllably expressing one or more of these polynucleotides in a plant results in increased drought resistance, increased root mass, increased seedling vigor or modulated branching.

L'invention concerne des compositions et des procédés destinés à améliorer les performances des plantes comprenant les transformations d'une plante au moyen d'un isopentényl transférase, d'une tryptophan monooxygénase ou d'un polynucléotide d'indole acétamide hydrolase. De préférence, la plante est transformée par un ipt, iaaM ou iaaH oncogène d'Agrobacterium tumefaciens lié de manière fonctionnelle à un promoteur de croissance préféré d'un stade ou un promoteur préféré des tissus. Selon l'invention, l'expression de manière contrôlée d'un ou plusieurs desdits polynucléotides dans une plante permet d'améliorer la résistance à la sécheresse, la masse des racines, la vigueur au départ ou une branchaison modulée.

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