MAIZE WITH ENHANCED TOLERANCE TO FUNGAL PATHOGENS

摘要

Increasing tolerance to a pathogenic fungus in corn comprises qualitatively and/or quantitatively altering a lignin synthesis by inhibiting the expression of a gene involved in biosynthesis of the lignin, where the tolerance to pathogenic fungus being increased with respect to the non-altered corn. An independent claim is included for a method to obtain a corn with a tolerance to fungal pathogens by introducing delta 3318 allele in the corn, in which the corn containing the delta 3318 allele has increased tolerance to fungal pathogens compared to the corn containing no such allele, comprises: crossing a first line of corn having the delta 3318 allele with a second line of corn having no such allele; genotyping of the obtained descendant and selecting the descendant having the delta 3318 allele and having the best genome ratio in second line of corn; backcrossing the descendants with the second line of elite corn usable for hybrid production; optionally repeating the genotyping and backcrossing steps to obtain an isogenic line of the second corn containing delta 3318 allele; and optionally carrying out a self-fertilization to obtain a homozygous plant for the delta 3318 allele.