Modification of starch content in plants

Details Modification of starch content in plants Modification of starch content in plants

C - Chemistry, Metallurgy

12

N

C12N 15/54 (2006.01) A01H 5/00 (2006.01) C12N 5/10 (2006.01) C12N 9/12 (2006.01) C12N 15/82 (2006.01)

Patent

CA 2192195

This invention is based on the surprising effect of increased enzyme activity when one of the genes of one of the subunit proteins of an enzyme catalysing starch is incorporated into a plant. The method also includes the introduction of one of the genes of one of the subunit proteins of a plurality of other enzymes catalysing starch synthesis. The gene is suitably a brittle-2 gene. Increased activity of ADPG PPsse is shown and also an increase in starch synthesis.

L'invention découle de l'effet surprenant d'une activité enzymatique accrue lorsque l'un des gènes d'une des protéines d'une sous-unité propre à une enzyme catalysant l'amidon est incorporé dans une plante. Le procédé utilisé consiste aussi à introduire un des gènes d'une des protéines d'une sous-unité propre à plusieurs autres enzymes catalysant la synthèse de l'amidon. Le gène approprié est brittle-2. On constate une activité accrue de l'ADPG PPase (adénosine diphosphoglucose, pyrophosphorylase) et une synthèse accrue de l'amidon.

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