UvVelC is important for conidiation and pathogenicity in the rice false smut pathogen Ustilaginoidea virens
文献类型: 外文期刊
第一作者: Yu, Mina
作者: Yu, Mina;Song, Tianqiao;Yu, Junjie;Cao, Huijuan;Pan, Xiayan;Qi, Zhongqiang;Du, Yan;Liu, Yongfeng;Liu, Wende;Liu, Yongfeng
作者机构: Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing, Peoples R China;Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Insistant Plant Protect, Beijing 100193, Peoples R China
关键词: Ustilaginoidea virens; velvet family; conidiation; pathogenicity
期刊名称:VIRULENCE ( 2022影响因子:5.2; 五年影响因子:5.9 )
ISSN: 2150-5594
年卷期: 2024 年 15 卷 1 期
收录情况: SCI
摘要: Rice false smut disease is one of the most significant rice diseases worldwide. Ustilaginoidea virens is the causative agent of this disease. Although several developmental and pathogenic genes have been identified and functionally analyzed, the pathogenic molecular mechanisms of U. virens remain elusive. The velvet family regulatory proteins are involved in fungal development, conidiation, and pathogenicity. In this study, we demonstrated the function of the VelC homolog UvVELC in U. virens. We identified the velvet family protein UvVELC and characterized its functions using a target gene deletion-strategy. Deletion of UvVELC resulted in conidiation failure and pathogenicity. The UvVELC expression levels during infection suggested that this gene might be involved in the early infection process. UvVELC is also important in resistance to abiotic stresses, the utilization efficiency of glucose, stachyose, raffinose, and other sugars, and the expression of transport-related genes. Moreover, UvVELC could physically interact with UvVEA in yeast, and UvVELC/UvVEA double-knockout mutants also failed in conidiation and pathogenicity. These results indicate that UvVELC play a critical role in the conidiation and pathogenicity in U. virens. Functional analysis indicated that UvVELC-mediated conidiation and nutrient acquisition from rice regulates the pathogenicity of U. virens. Understanding the function of the UvVELC homolog could provide a potential molecular target for controlling rice false smut disease.
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