Manipulation of cellulose and/or .beta.-1,4-glucan

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/54 (2006.01) A01H 5/00 (2006.01) C07K 16/40 (2006.01) C12N 9/10 (2006.01) C12N 15/82 (2006.01) C12P 19/04 (2006.01) C12P 19/18 (2006.01)

Patent

CA 2259126

The present invention relates generally to isolated genes which encode polypeptides involved in cellulose biosynthesis in plants and transgenic plants expressing same in sense or antisense orientation, or as ribozymes, co-suppression or gene-targeting molecules. More particularly, the present invention is directed to a nucleic acid molecule isolated from Arabidopsis thaliana, Oryza sativa, wheat, barley, maize, Brassica ssp., Gossypium hirsutum and Eucalyptus ssp. which encode an enzyme which is important in cellulose biosynthesis, in particular the cellulose synthase enzyme and homologues, analogues and derivatives thereof and uses of same in the production of transgenic plants expressing altered cellulose biosynthetic properties.

Cette invention concerne, de manière générale, des gènes isolés qui codent des polypeptides jouant un rôle dans la biosynthèse de cellulose chez les végétaux. Cette invention concerne également des plantes transgéniques permettant d'exprimer ces polypeptides selon une orientation sens ou antisens ou, encore, sous forme de ribozymes ou de molécules de co-suppression ou de ciblage de gènes. Cette invention concerne plus particulièrement une molécule d'acide nucléique isolée à partir d'Arabidopsis thaliana, d'Oryza sativa, de blé, d'orge, de maïs, de Brassica ssp., de Gossypium hirsutum et d'Eucalyptus ssp. Cette molécule code une enzyme qui joue un rôle important dans la biosynthèse de cellulose, et notamment l'enzyme de synthase de cellulose ainsi que ses homologues, analogues et dérivés. Cette invention concerne enfin l'utilisation de ces éléments dans la production de plantes transgéniques permettant d'exprimer des propriétés de biosynthèse de cellulose modifiées.

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