Lysosome disruption associated with hypersensitive reaction in the potato-Phytophthora infestans host-parasite interaction

作者: C.M. Jordan , J.E. DeVay

DOI: 10.1016/0885-5765(90)90027-U

关键词: PathogenBiochemistryPhytophthora infestansCytoplasmHost cell cytoplasmMicrobiologyLysosomeAcid phosphataseSuperoxide dismutaseSuperoxideBiology

摘要: Abstract Disruption of plasma and lysosome membranes in cells potato leaves inoculated with Phytophthora infestans was investigated relation to compatible incompatible [hypersensitive reaction (HR)] interactions host pathogen. Reaction products acid phosphatase, represented by electron-dense deposits, were mostly compartmentalized within lysosomes both the healthy noninoculated leaf tissues. The also associated membrane controls. In HR, deposits evident as well cell cytoplasm where they appeared free; cytoplasm, presence phosphatase considerably greater than those interaction or controls usually sparse absent. especially heavily concentrated infected (HR) closely fungal hyphae. Generation hydroxyl free radicals superoxide anions significantly HR Superoxide dismutase added medium suppressed production increased generation Our results suggest that oxygen is a function mainly aggressiveness Moreover, disruption but role still unclear.

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