Plant stress tolerance genes, and uses therefor

Details Plant stress tolerance genes, and uses therefor Plant stress tolerance genes, and uses therefor

C - Chemistry, Metallurgy

12

N

C12N 15/82 (2006.01) C07K 14/415 (2006.01) C12N 15/11 (2006.01)

Patent

CA 2505623

Plant stresses such as pest infestations, disease, drought, flood, and excessive temperatures can lead to significant losses of crops each year. There is a continuing need to develop novel plant varieties that are less susceptible to damage or loss by such stresses. The present invention provides for the isolation, characterization and use of an entirely novel class of plant genes, generally designated ROB5. Transgenic plants expressing ROB5 can show a dramatic improvement in their capacity to tolerate a variety of stress conditions. Moreover, ROB5 expression can further lead to marked increases in plant growth rates and plant vigor. The present invention encompasses all such ROB5 genes and peptides encoded thereby, plants expressing corresponding ROB5 constructs, and plant products thereof.

Le stress que subissent les plantes, notamment les infections par les parasites, les maladies, la sécheresse, les inondations et les températures excessives, entraîne des pertes importantes de récoltes chaque année. Le besoin de développer de nouvelles variétés de plantes moins sensibles aux détériorations et aux pertes provoquées par ce stress s'avère ainsi continu. L'invention concerne l'isolation, la caractérisation et l'utilisation d'une classe toute nouvelle de gènes de plante, généralement appelés <I>ROB5</I>. Des plantes transgéniques exprimant les gènes <I>ROB5 </I>peuvent présenter une amélioration spectaculaire en ce qui concerne leur capacité à tolérer une variété de conditions de stress. En outre, l'expression des <I>ROB5 </I>peut mener à des augmentations marquées en ce qui concerne la vitesse de croissance et la vigueur des plantes. L'invention concerne tous lesdits gènes <I>ROB5 </I>et les peptides codés par ceux-ci, des plantes exprimant des constructions de <I>ROB5 </I>correspondantes, et des produits végétaux associés.

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