Effect of RNA-binding protein nuclear accommodation of mitochondria 8-FgNam8 on deoxynivalenol production and virulence of mycotoxigenic Fusarium graminearum
文献类型： 外文期刊
作者： Jiang, Yunan 1 ; Xia, Haoxue 1 ; He, Yaru 1 ; Wang, Ying 1 ; Liu, Wende 1 ; Tang, Guangfei 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
关键词： RNA-binding proteins; DON; Pathogenicity
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.5； 五年影响因子：8.7 ）
ISSN： 0141-8130
年卷期： 2025 年 318 卷
页码：
收录情况： SCI
摘要： RNA-binding proteins (RBPs) are important regulators in RNA metabolism and gene expression in eukaryotes. Emerging studies support that RBPs play important roles in human development, metabolism and various diseases. However, the function of fungal RBPs is less identified and understood. The present study identifies an RBP FgNam8 which is U1 auxiliary component nuclear accommodation of mitochondria 8 (Nam8). The FgNam8 contains three RNA recognition motifs (RRM) and localizes to the cytoplasm and nucleus in F. graminearum. The Delta FgNam8 is reduced in vegetative growth and production of conidia. RNA-seq analyses show multiple RNA-associated biological processes and secondary metabolite biosynthesis pathways are altered in the Delta FgNam8. Furthermore, Delta FgNam8 is significantly reduced in deoxynivalenol (DON) production and virulence. More importantly, we verify the NDR (nuclear Dbf2-related) protein kinase FgCot1 interacts with FgNam8. Taken together, our results indicate that FgNam8 is important for the vegetative development, conidia production, DON production and virulence of F. graminearum, which may help to provide a candidate target for the treatment of Fusarium disease.
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