FgCsn12 Is Involved in the Regulation of Ascosporogenesis in the Wheat Scab Fungus Fusarium graminearum
文献类型： 外文期刊
作者： Jiang, Hang 1 ; Zhang, Yuhan 2 ; Wang, Wanshan 2 ; Cao, Xinyu 2 ; Xu, Huaijian 2 ; Liu, Huiquan 2 ; Qi, Junshan 1 ; Jiang, Cong 2 ; Wang, Chenfang 2 ;
作者机构： 1.Shandong Acad Agr Sci, Inst Plant Protect, Shandong Key Lab Plant Virol, Jinan 250100, Peoples R China
2.Northwestern A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Xianyang, Peoples R China
关键词： crop disease; phytopathogenic fungus; Fusarium graminearum; COP9 signalosome complex; sexual reproduction; ascospore
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）
ISSN：
年卷期： 2022 年 23 卷 18 期
页码：
收录情况： SCI
摘要： Fusarium head blight (FHB), caused by the fungal pathogen Fusarium graminearum, is a destructive disease worldwide. Ascospores are the primary inoculum of F. graminearum, and sexual reproduction is a critical step in its infection cycle. In this study, we characterized the functions of FgCsn12. Although the ortholog of FgCsn12 in budding yeast was reported to have a direct interaction with Csn5, which served as the core subunit of the COP9 signalosome, the interaction between FgCsn12 and FgCsn5 was not detected through the yeast two-hybrid assay. The deletion of FgCSN12 resulted in slight defects in the growth rate, conidial morphology, and pathogenicity. Instead of forming four-celled, uninucleate ascospores, the Fgcsn12 deletion mutant produced oval ascospores with only one or two cells and was significantly defective in ascospore discharge. The 3 ' UTR of FgCsn12 was dispensable for vegetative growth but essential for sexual reproductive functions. Compared with those of the wild type, 1204 genes and 2240 genes were up- and downregulated over twofold, respectively, in the Fgcsn12 mutant. Taken together, FgCsn12 demonstrated an important function in the regulation of ascosporogenesis in F. graminearum.
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