Genetically modified plants with altered starch

Details Genetically modified plants with altered starch Genetically modified plants with altered starch

C - Chemistry, Metallurgy

12

N

C12N 15/54 (2006.01) A23L 1/0522 (2006.01) C08B 30/00 (2006.01) C12N 5/10 (2006.01) C12N 9/10 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2365279

Starch yield of wheat and maize plants grown under higher temperatures than control plants is increased by the introduction of a chimaeric gene comprising a glycogen synthase coding sequence under the control of a promoter directing expression and a terminator. A transit peptide for translocation of the glycogen synthase to the plant plastid may also be included in the chimaeric gene. The starch may also have altered processing characteristics, in particular an increased chain length.

Selon l'invention, le rendement d'amidon du blé et du maïs cultivés à des températures plus élevées que pour des plantes témoins est augmenté par l'introduction d'un gène chimère comprenant une séquence codant pour la glycogène synthase sous le contrôle d'un promoteur dirigeant l'expression et d'un terminateur. Ledit gène chimère peut également comprendre un peptide de transit permettant de réaliser la translocation de l'enzyme ramifiant les glycogènes vers le plaste du végétal. Cet amidon peut également présenter une modification de ses caractéristiques de traitement, et notamment un allongement de la chaîne.

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