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- W2127698889 abstract "We have identified an Arabidopsis mutant that displays enhanced disease resistance to the fungus Erysiphe cichoracearum, causal agent of powdery mildew. The edr1 mutant does not constitutively express the pathogenesis-related genes PR-1, BGL2, or PR-5 and thus differs from previously described disease-resistant mutants of Arabidopsis. E. cichoracearum conidia (asexual spores) germinated normally and formed extensive hyphae on edr1 plants, indicating that the initial stages of infection were not inhibited. Production of conidiophores on edr1 plants, however, was <16% of that observed on wild-type Arabidopsis. Reduction in sporulation correlated with a more rapid induction of defense responses. Autofluorescent compounds and callose accumulated in edr1 leaves 3 days after inoculation with E. cichoracearum, and dead mesophyll cells accumulated in edr1 leaves starting 5 days after inoculation. Macroscopic patches of dead cells appeared 6 days after inoculation. This resistance phenotype is similar to that conferred by “late-acting” powdery mildew resistance genes of wheat and barley. The edr1 mutation is recessive and maps to chromosome 1 between molecular markers ATEAT1 and NCC1. We speculate that the edr1 mutation derepresses multiple defense responses, making them more easily induced by virulent pathogens." @default.
- W2127698889 created "2016-06-24" @default.
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- W2127698889 date "1998-06-01" @default.
- W2127698889 modified "2023-10-18" @default.
- W2127698889 title "An Arabidopsis Mutant with Enhanced Resistance to Powdery Mildew" @default.
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- W2127698889 doi "https://doi.org/10.1105/tpc.10.6.947" @default.
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