Monocot ahass sequences and methods of use

Details Monocot ahass sequences and methods of use Monocot ahass sequences and methods of use

C - Chemistry, Metallurgy

12

N

C12N 15/82 (2006.01) A01H 5/00 (2006.01) C07H 21/04 (2006.01)

Patent

CA 2575500

Isolated polynucleotides that encode acetohydroxyacid synthase small subunit (AHASS) polypeptides, and the amino acid sequences encoded by these polynucleotides, are described. The present invention provides expression cassettes and plant expression vectors comprising the polynucleotides encoding the AHASS polypeptides or AHASS fusion polypeptides. Also provided are plants, seeds, and host cells transformed with the polynucleotides, expression cassettes, or expression vectors of the present invention. The invention further provides methods of using the polynucleotides of the present invention to enhance the AHAS activity and to enhance tolerance of plants to herbicides.

L'invention concerne des polynucléotides isolés codant pour des polypeptides de la petite sous-unité de l'acétohydroxyacide synthase (AHASS) ainsi que les séquences d'acides aminés codées par ces polynucléotides. La présente invention concerne des cassettes d'expression et des vecteurs d'expression de plantes comprenant les polynucléotides codant pour les polypeptides d'AHASS ou des polypeptides de fusion AHASS. L'invention porte également sur des plantes, des graines et des cellules hôtes transformées au moyen des polynucléotides, des cassettes d'expression ou des vecteurs d'expression susmentionnés. Elle se rapporte en outre à des méthodes d'utilisation desdits polynucléotides en vue d'un renforcement de l'activité AHAS et d'un renforcement de la résistance des plantes aux herbicides.

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