Polynucleotides and methods for making plants resistant to...

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01) A01H 5/00 (2006.01) C12N 15/29 (2006.01) C12Q 1/68 (2006.01)

Patent

CA 2604351

This invention relates to polynucleotide sequences encoding a gene that can confer resistance to the plant pathogen Colletotrichum, which causes anthracnose stalk rot, leaf blight and top dieback in corn and other cereals. It further relates to plants and seeds of plants carrying chimeric genes comprising said polynucleotide sequences, which enhance or confer resistance to the plant pathogen Colletotrichum, and processes of making said plants and seeds. The invention further presents sequences that can be used as molecular markers that in turn can be used to identify the region of interest in corn lines resulting from new crosses and to quickly and efficiently introgress the gene from corn lines carrying said gene into other corn lines that do not carry said gene, in order to make them resistant to Colletotrichum and resistant to stalk rot.

L'invention concerne des séquences polynucléotidiques codant pour un gène pouvant conférer une résistance à l'agent pathogène des plantes Colletotrichum, qui cause la pourriture rouge des tiges, la brûlure des feuilles et le dépérissement terminal induits par l'anthracnose dans le maïs et d'autres céréales. Cette invention concerne également des plantes et des graines de plantes portant des gènes chimères comprenant lesdites séquences polynucléotidiques, qui améliorent ou confèrent une résistance à l'agent pathogène des plantes Colletotrichum, ainsi que des procédés de production desdites plantes et graines. Ladite invention se rapporte en outre à des séquences pouvant être utilisées comme marqueurs moléculaires qui, à leur tour, peuvent être utilisés pour identifier la région d'intérêt dans des lignées de maïs résultant de nouveaux croisements et pour introgresser de façon rapide et efficace le gène de lignées de maïs portant ce gène dans d'autres lignées de maïs ne portant pas ce gène, afin de les rendre résistantes à Colletotrichumet à la pourriture rouge des tiges.

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