Water deficit-inducible promoters

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 1/00 (2006.01) C12N 5/10 (2006.01) C12N 15/11 (2006.01)

Patent

CA 2678257

Water deficit-inducible promoter sequences were identified that may be used to produce transgenic plants that are more tolerant to water deficit and related hyperosmotic stresses than control plants, and yet are wild-type or nearly wild type in appearance. Any of these water deficit-inducible promoters may be incorporated into an expression vector that comprises a polynucleotide regulated by one such promoter and which encodes a polypeptide that, when ectopically expressed, improves water deficit tolerance in plants that are similar to control plants in their morphology and development.

L'invention concerne des séquences de promoteur inductibles vis-à-vis d'un déficit en eau identifiées qui peuvent être utilisées pour produire des plantes transgéniques qui sont davantage tolérantes à un déficit en eau et à des contraintes hyperosmotiques apparentées que des plantes témoins, et qui sont toutefois de type sauvage ou de type presque sauvage en termes d'apparence. L'un quelconque de ces promoteurs inductibles vis-à-vis d'un déficit en eau peut être incorporé dans un vecteur d'expression qui comprend un polynucléotide régulé par un tel promoteur et qui code pour un polypeptide qui, lorsqu'il est exprimé d'une manière ectopique, améliore la tolérance au déficit en eau chez les plantes qui sont similaires aux plantes témoins en termes de morphologie et de développement.

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