ChCDC25 Regulates Infection-Related Morphogenesis and Pathogenicity of the Crucifer Anthracnose Fungus Colletotrichum higginsianum
文献类型： 外文期刊
作者： Yan, Yaqin 1 ; Tang, Jintian 1 ; Yuan, Qinfeng 1 ; Gu, Qiongnan 3 ; Liu, Hao 1 ; Huang, Junbin 1 ; Hsiang, Tom 4 ; Zheng, 1 ;
作者机构： 1.Huazhong Agr Univ, Key Lab Plant Pathol Hubei Prov, Wuhan, Peoples R China
2.China Jiliang Univ, Coll Life Sci, Zheilang Prov Key Lab Biometrol & Inspect & Quara, Hangzhou, Peoples R China
3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan, Peoples R China
4.Univ Guelph, Sch Environm Sci, Guelph, ON, Canada
关键词： Colletotrichum higginsianum; ChCDC25; appressorial formation; cAMP signaling pathway; pathogenicity
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2020 年 11 卷
页码：
收录情况： SCI
摘要： The fungal pathogen, Colletotrichum higginsianum, causes a disease called anthracnose on various cruciferous plants. Here, we characterized a Saccharomyces cerevisiae CDC25 ortholog in C. higginsianum, named ChCDC25 (CH063_04363). The ChCDC25 deletion mutants were defective in mycelial growth, conidiation, conidial germination, appressorial formation, and invasive hyphal growth on Arabidopsis leaves, resulting in loss of virulence. Furthermore, deletion of ChCDC25 led to increased sensitivity to cell wall stress and resulted in resistance to osmotic stress. Exogenous cyclic adenosine monophosphate (cAMP) and IBMX treatments were able to induce appressorial formation in the ChCDC25 mutants, but abnormal germ tubes were still formed. The results implied that ChCDC25 is involved in pathogenicity by regulation of cAMP signaling pathways in C. higginsianum. More importantly, we found that ChCDC25 may interact with Ras2 and affects Ras2 protein abundance in C. higginsianum. Taken together, ChCDC25 regulates infection-related morphogenesis and pathogenicity of C. higginsianum. This is the first report to reveal functions of a CDC25 ortholog in a hemibiotrophic phytopathogen.
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