Abstract
Fusarium oxysporum f. sp. conglutinans (FOC) is the dominant pathogen of vascular wilt disease on cabbage and other crucifers. Foc-Nto1 was confirmed to be the homologous protein of Nto1, a subunit of the NuA3 (nucleosomal acetyltransferase of histone H3) complex in Saccharomyces cerevisiae. FOC contains two races, race 1 and race 2. The functions of Nto1 in both races were investigated through functional genetics analyses. The Nto1-deleted mutants were decreased in conidium production and displayed increased sensitivity to hydrogen peroxide. These mutants also had reduced virulence on cabbage. The study provided evidence that Nto1 is a potential metabolic- and pathogenic-related factor in F. oxysporum.
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