Autophagy-related protein UvAtg14 contributes to mycelial growth, asexual reproduction, virulence and cell stress response in rice false smut fungus Ustilaginoidea virens
文献类型： 外文期刊
第一作者： Yu, Junjie
作者： Yu, Junjie;He, Xiang;Xu, Cunfa;Yu, Mina;Song, Tianqiao;Cao, Huijuan;Pan, Xiayan;Qi, Zhongqiang;Du, Yan;Zhang, Rongsheng;Liang, Dong;Liu, Yongfeng;He, Xiang;Liu, Yongfeng
作者机构：
关键词： Ustilaginoidea virens; Autophagy; UvAtg14; Mycelial growth; Conidium; Chlamydospore; Pathogenicity
期刊名称：PHYTOPATHOLOGY RESEARCH （ 影响因子：3.955； 五年影响因子：3.955 ）
ISSN： 2096-5362
年卷期： 2022 年 4 卷 1 期
页码：
收录情况： SCI
摘要： Autophagy is an evolutionarily conserved degradation process that degrades damaged proteins to maintain homeostasis and to protect cells against stress. In this study, we identified and characterized a critical autophagy-related protein, UvAtg14, in Ustilaginoidea virens, which is the ortholog of MoAtg14 in rice blast fungus Magnaporthe oryzea. UvAtg14 is co-localized with UvAtg8 (an autophagy marker protein) and is highly expressed at 1-3 days post-inoculation. Deletion of the UvATG14 gene blocked GFP-UvAtg8 trafficking and autophagic digestion and significantly reduced mycelial growth, asexual reproduction, and virulence of U. virens. UvATG14 deletion mutants also exhibited increased sensitivity to various abiotic stresses. Our findings indicate that UvAtg14 is a key autophagic protein and contributes to mycelial growth, conidia production, and pathogenicity in U. virens.
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