Retromer Regulates Macro- and Micro-Autophagy via Distinct Vacuolar Proteases in the Rice Blast Fungus
文献类型： 外文期刊
作者： Zhang, Dingyang 1 ; Hu, Jiexiong 1 ; Hong, Yonghe 1 ; Fan, Yuping 1 ; Peng, Minghui 4 ; Abubakar, Yakubu Saddeeq 1 ; Liang, Shujing 1 ; Jiang, Nan 1 ; Lin, Lili 1 ; Pan, Xiaohong 1 ; Zheng, Huakun 1 ; Naqvi, Naweed I. 5 ; Wang, Zonghua 7 ; Zheng, Wenhui 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Plant Protect, State Key Lab Agr & Forestry Biosecur, Minist Educ, Fuzhou 350002, Peoples R China
2.Fujian Agr & Forestry Univ, Coll Plant Protect, Key Lab Biopesticide & Chem Biol, Minist Educ, Fuzhou 350002, Peoples R China
3.Fujian Acad Agr Sci, Rice Res Inst, Fuzhou 350003, Peoples R China
4.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China
5.Natl Univ Singapore, Temasek Life Sci Lab, Singapore 117604, Singapore
6.Natl Univ Singapore, Dept Biol Sci, Singapore 117604, Singapore
7.Minjiang Univ, Inst Oceanog, Fuzhou 350108, Peoples R China
关键词： macro-autophagy; Magnaporthe oryzae; pexophagy; retromer complex; vacuolar proteases
期刊名称：ADVANCED SCIENCE （ 影响因子：14.1； 五年影响因子：15.6 ）
ISSN：
年卷期： 2025 年
页码：
收录情况： SCI
摘要： The vacuole degrades and recycles endocytic and autophagic cargos, while the retromer complex sorts cargos from the endosomes to the trans-Golgi network or the plasma membrane, thus preventing unnecessary vacuolar degradation. However, whether the retromer complex regulates vacuolar proteolytic system during autophagic substrate degradation remains unclear. This study demonstrates that the retromer complex regulates both general and selective autophagy by ensuring the delivery of vacuolar protease(s) into the vacuole lumen in the rice blast fungus Magnaporthe oryzae. The central retromer subunit, MoVps35, transports the serine protease MoPrb1 from the endosomes to the vacuole lumen. Deletion of MoVPS35 or any other retromer component prevents the transport of MoPrb1-GFP into the vacuole lumen. Consistently, Delta Moprb1 mutant shows similar defects as the retromer mutants, including failure of autophagy-dependent conidiation and plant infection. Additionally, mutation of the catalytic residues of MoPrb1 (Asp 192, His 224 and Ser 390) reduces autophagy flux. Furthermore, MoVps35 also interacts with another aspartyl protease MoPep4 via MoPrb1. Loss of MoPEP4 leads to abnormal micro-autophagy (pexophagy) but not to fungal development and pathogenicity. Overall, this study demonstrates a crucial role of the retromer complex in the regulation of macro- and micro-autophagy by different vacuolar proteases in M. oryzae.
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