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Endosomal sorting complexes required for transport-0 (ESCRT-0) are essential for fungal development, pathogenicity, autophagy and ER-phagy in Magnaporthe oryzae

文献类型： 外文期刊

作者： Sun, Li-Xiao 1 ; Qian, Hui 1 ; Liu, Meng-Yu 1 ; Wu, Ming-Hua 1 ; Wei, Yun-Yun 1 ; Zhu, Xue-Ming 2 ; Lu, Jian-Ping 3 ; Lin 1 ;

作者机构： 1.Zhejiang Univ, Inst Biotechnol, State Key Lab Managing Biot & Chem Treats Qual &, Hangzhou 310058, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Managing Biot & Chem Treats Qual &, Hangzhou 310021, Peoples R China

3.Zhejiang Univ, Coll Life Sci, Hangzhou 310058, Peoples R China

期刊名称：ENVIRONMENTAL MICROBIOLOGY （ 影响因子：5.491； 五年影响因子：6.438 ）

ISSN： 1462-2912

年卷期：

页码：

收录情况： SCI

摘要： Magnaporthe oryzae is an important plant pathogen that causes rice blast. Hse1 and Vps27 are components of ESCRT-0 involved in the multivesicular body (MVB) sorting pathway and biogenesis. To date, the biological functions of ESCRT-0 in M. oryzae have not been determined. In this study, we identified and characterized Hse1 and Vps27 in M. oryzae. Disruption of MoHse1 and MoVps27 caused pleiotropic defects in growth, conidiation, sexual development and pathogenicity, thereby resulting in loss of virulence in rice and barley leaves. Disruption of MoHse1 and MoVps27 triggered increased lipidation of MoAtg8 and degradation of GFP-MoAtg8, indicating that ESCRT-0 is involved in the regulation of autophagy. ESCRT-0 was determined to interact with coat protein complex II (COPII), a regulator functioning in homeostasis of the endoplasmic reticulum (ER homeostasis), and disruption of MoHse1 and MoVps27 also blocked activation of the unfolded protein response (UPR) and autophagy of the endoplasmic reticulum (ER-phagy). Overall, our results indicate that ESCRT-0 plays critical roles in regulating fungal development, virulence, autophagy and ER-phagy in M. oryzae.

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