CaSun1, a SUN family protein, governs the pathogenicity of Colletotrichum camelliae by recruiting CaAtg8 to promote mitophagy
文献类型： 外文期刊
作者： Meng, Shuai 1 ; Chao, Shufen 1 ; Xiong, Meng 2 ; Cheng, Longjun 1 ; Sun, Yu 1 ; Wang, Li 4 ; Chen, Ya 5 ; Jane, Sadhna Jagernath 6 ; Luo, Chaoxi 2 ; Chen, Jie 1 ;
作者机构： 1.Zhejiang Agr & Forestry Univ, Coll Forestry & Biotechnol, Natl Joint Local Engn Lab High Efficient Preparat, 666 Wusu St, Hangzhou 311300, Peoples R China
2.Huazhong Agr Univ, Hubei Key Lab Plant Pathol, Shizishan St 1, Wuhan 430070, Peoples R China
3.Huazhong Agr Univ, Coll Plant Sci & Technol, Shizishan St 1, Wuhan 430070, Peoples R China
4.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Zhengzhou 450009, Henan, Peoples R China
5.China Natl Rice Res Inst, State Key Lab Rice Biol, 28 Dao Ru Rice, Hangzhou 311400, Peoples R China
6.Anton Kom Univ Suriname, Fac Technol Sci, Agr Dept, Leysweg 86, Bldg 7, Paramaribo, Suriname
期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.5； 五年影响因子：9.1 ）
ISSN： 2662-6810
年卷期： 2025 年 12 卷 7 期
页码：
收录情况： SCI
摘要： Camellia oleifera, a woody oilseed plant native to China, is highly susceptible to anthracnose, a fungal disease that poses a significant threat to its yield and quality. Mitophagy, a specialized form of autophagy that specifically targets dysfunctional mitochondria, is crucial for cellular homeostasis, stress response, and pathogenesis in fungi. The proteins that potentially participate in mitophagy in Colletotrichum camelliae were identified herein using immunoprecipitation-mass spectrometry (IP-MS) by screening for the potential protein interactors of the core autophagy-related protein, CaAtg8. Among the identified mitochondria-associated proteins, CaSun1 was selected for further investigation. Phenotypic analyses revealed that CaSun1 is a critical regulator of vegetative growth, conidiation, and pathogenicity. CaSun1 localized to the mitochondria, consistent with the conserved function of SUN family proteins. Notably, the findings revealed that CaSun1 was essential for mitophagy and colocalized with CaAtg8 during nitrogen starvation. Functional analyses demonstrated that CaSun1-mediated mitophagy is vital for the growth of invasive hyphae and pathogenicity in C. camelliae. In summary, our findings indicated that CaSun1 mediates mitophagy by facilitating the recruitment of CaAtg8 in C. camelliae, thereby contributing to the establishment of anthracnose. This study provided novel insights into the molecular mechanisms underlying the pathogenesis of fungal infections and identified a potential target for disease control.
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