The Velvet Protein UvVEA Regulates Conidiation and Chlamydospore Formation in Ustilaginoidea virens
文献类型： 外文期刊
作者： Yu, Mina 1 ; Yu, Junjie 2 ; Cao, Huijuan 2 ; Pan, Xiayan 2 ; Song, Tianqiao 2 ; Qi, Zhongqiang 2 ; Du, Yan 2 ; Huang, Shiwen 1 ; Liu, Yongfeng 2 ;
作者机构： 1.China Natl Rice Res Inst, State Key Lab Rice Biol, Hangzhou 311400, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China
关键词： rice false smut; Ustilaginoidea virens; velvet; conidia; chlamydospores
期刊名称：JOURNAL OF FUNGI （ 影响因子：5.724； 五年影响因子：6.413 ）
ISSN：
年卷期： 2022 年 8 卷 5 期
页码：
收录情况： SCI
摘要： Rice false smut, caused by Ustilaginoidea virens, is a serious disease of rice worldwide, severely reducing the quantity and quality of rice production. The conserved fungal velvet proteins are global regulators of diverse cellular processes. We identified and functionally characterized two velvet genes, UvVEA and UvVELB, in U. virens. The deletion of these genes affected the conidiation of U. virens but had no effect on the virulence of this pathogen. Interestingly, the Delta UvVEA mutants appeared in the form of smaller false smut balls with a reduced number of chlamydospores compared with the wide-type strains. In addition, the deletion of UvVEA affected the expression of some transmembrane transport genes during chlamydospore formation and rice false smut balls development. Furthermore, the Delta UvVEA mutants were shown to be defective in the utilization of glucose. These findings proved the regulatory mechanism underlying the formation of rice false smut balls and chlamydospores and provided a basis for the further exploration of the mechanism of these processes.
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