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The near-UV component of sunlight decreased culturability of the leaf epiphyte and plant pathogen Pseudomonas syringae. Exposure of the wild-type cells for 4 h to UV-A and UV-B in sunlight was ten fold more detrimental than exposure to sunlight with just UV-A. Sensitivity to UV-A especially increased in a mutant of P. syringae lacking the global regulatory sigma factor, RpoS. No RpoS-mutant cells...
The near-UV component of sunlight decreased culturability of the leaf epiphyte and plant pathogen Pseudomonas syringae. Exposure of the wild-type cells for 4 h to UV-A and UV-B in sunlight was ten fold more detrimental than exposure to sunlight with just UV-A. Sensitivity to UV-A especially increased in a mutant of P. syringae lacking the global regulatory sigma factor, RpoS. No RpoS-mutant cells...