Methods and materials for conferring resistance to pests and...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/82 (2006.01)

Patent

CA 2584960

Methods and materials for conferring pest resistance to plants are provided. Plants are transformed with a silencing construct homologous to a gene of a plant pest that is essential for the survival, development, or pathogenicity of the pest. This results in the plant producing RNAi to the selected gene, which, when ingested by the pest results in silencing of the gene and a subsequent reduction of the pest's ability to harm the plant. In other embodiments, the pest's reduced ability to harm the plant is passed on to pest progeny. Methods and materials for depathogenesis of pests is also provided.

L'invention concerne des procédés et matériaux permettant de conférer à des plantes une résistance aux parasites. Des plantes sont transformées avec un silenceur homologue à un gène d'un parasite de plante essentiel à la survie, au développement ou à la pathogénicité du parasite. Ceci à pour conséquence la production par la plante d'ARNi du gène sélectionné lequel, lorsqu'il est ingéré par le parasite, à pour résultat la diminution de la transcription du gène et par conséquent une diminution de la capacité du parasite à provoquer des dégâts à la plante. Dans d'autres modes de réalisation, cette capacité réduite du parasite à provoquer des dégâts à la plante est transmise à la descendance du parasite. L'invention concerne également des procédés et matériaux pour la dépathogenèse de parasites.

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