Reduced susceptibility towards pathogens, in particular...

C - Chemistry – Metallurgy – 12 – N

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C12N 15/82 (2006.01) A01H 5/00 (2006.01)

Patent

CA 2571078

The present invention relates to a for obtaining a plant showing a reduced susceptibility towards infection with a pathogen, in particular an oomycete, comprising treating MO seeds of a plant species to be modified with a mutagenic agent to obtain Ml seeds and growing plants therefrom the thus obtained Ml seeds to obtain Ml plants, inoculation of the thus obtained M1+n plants with the pathogen and selecting plants that show a reduction or absence of sporulation of the pathogen as plants having a reduced susceptibility phenotype. The invention further relates to plants, seeds, pollen, cells and tissues that have the reduced susceptibility towards oomycetes.

L'invention concerne un procédé d'obtention d'une plante affichant une sensibilité réduite à l'infection par un pathogène, en particulier un oomycète. Ce procédé consiste : à traiter des graines de M0 d'un espèce végétale à modifier avec un agent mutagène afin d'obtenir des graines M1 ; à cultiver des plantes produites à partir des graines M1 ainsi obtenues afin d'obtenir des plantes M1 ; à inoculer lesdites plantes M1+n ainsi obtenues avec le pathogène ; et à sélectionner les plantes affichant une réduction ou une absence de sporulation du pathogène en tant que plantes présentant un phénotype à sensibilité réduite. L'invention concerne en outre des plantes, des graines, du pollen, des cellules et des tissus présentant une sensibilité réduite envers les oomycètes.

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