REDUCED SUSCEPTIBILITY TOWARDS PATHOGENS， IN PARTICULAR OOMYCETES， SUCH AS DOWNY MILDEW IN LETTUCE AND SPINACH

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.