作    者：王秀娟，李鈞敏等
影響因子：0.477
刊物名稱：J Plant Dis Prot
出版年卷：DOI 10.1007/s41348-017-0099-3

文章摘要：Sclerotinia sclerotiorum is a devastating fungal pathogen in economically important plants. We know not all but a lot about the molecular host defense to the fungus, but less direct for the pathosystem, which makes the fungal infection difficult to control. In this study, we analyzed the lipid changes in S. sclerotiorum-infected Arabidopsis thaliana, in the hope of shedding lights on plant defense response to the fungal infection. The full-scan mass spectrometry combined with principal component analysis showed that A. thaliana underwent significant lipid metabolic changes following S. sclerotiorum infection. The levels of oxylipin-containing PG (phosphatidylglycerol), oxylipin-containing DGDG (digalactosyldiacylglycerol), and lyso-MGDG (monogalactosyldiacylglycerol) were 3, 6, and 24 h after infection, implying that lipoxygenase acts directly on plastid-localized lipid species. Sclerotinia sclerotiorum infection also increased the levels of free fatty acids such as C18:3 all time point, which indicates that the high level of C18:3 is likely to be involved in the synthesis of jasmonic acid. In conclusion, S. sclerotiorum-induced lipid metabolism of A. thaliana, and the synthesized glycerolipids were oxidized to oxylipin-containing glycerolipids and free fatty acids.

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