A Subunit of ESCRT-III, MoIst1, Is Involved in Fungal Development, Pathogenicity, and Autophagy in Magnaporthe oryzae
文献类型： 外文期刊
作者： Sun, Lixiao 1 ; Qian, Hui 1 ; Wu, Minghua 1 ; Zhao, Wenhui 1 ; Liu, Mengyu 1 ; Wei, Yunyun 1 ; Zhu, Xueming 2 ; Li, Lin 2 ; Lu, Jianping 3 ; Lin, Fucheng 1 ; Liu, Xiaohong 1 ;
作者机构： 1.Zhejiang Univ, Inst Biotechnol, State Key Lab Managing Biot & Chem Treats Qual & S, Hangzhou, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Managing Biot & Chem Treats Qual & S, Hangzhou, Peoples R China
3.Zhejiang Univ, Coll Life Sci, Hangzhou, Peoples R China
关键词： Magnaporthe oryzae; MoIst1; fungal development; pathogenesis; autophagy
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： The culprit of rice blast, Magnaporthe oryzae, is a filamentous fungus that seriously affects the yield and quality of rice worldwide. MoIst1, a subunit of ESCRT-III, is involved in identified ubiquitinated proteins and transports them into the intraluminal vesicles of multivesicular bodies (MVBs) for degradation in lysosomes. Here, we identify and characterize MoIst1 in M. oryzae. Disruption of MoIst1 leads to a significant decrease in sporulation and formation of appressoria, defects in response to oxidative stress, cell wall stress, hyperosmotic stress, and reduced pathogenicity. Deletion of MoIst1 also caused the decreased Pmk1 phosphorylation levels, appressorium formation, the delayed translocation and degradation of lipid droplets and glycogen, resulting in a decreased appressorium turgor. In addition, deletion of MoIst1 leads to an abnormal autophagy. In summary, our results indicate that MoIst1 is involved in sporulation, appressorium development, plant penetration, pathogenicity, and autophagy in M. oryzae.
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