数字农科院2.0

Transcriptional Activator UvXlnR Is Required for Conidiation and Pathogenicity of Rice False Smut Fungus Ustilaginoidea virens

文献类型： 外文期刊

作者： Yan, Jiali;Wang, Rui;Wu, Mengyao;Cai, Minzheng;Qu, Jinsong;Liu, Lianmeng;Xie, Jiatao;Yin, Weixiao;Luo, Chaoxi

作者机构：

关键词： extracellular xylanase;pathogenicity;transcription factors;Ustilaginoidea virens;XlnR

期刊名称： PHYTOPATHOLOGY

ISSN： 0031-949X

年卷期： 2024 年

页码：

收录情况： SCIE（2024版）

摘要： Transcription factors play critical roles in diverse biological processes in fungi. XlnR, identified as a transcriptional activator that regulates the expression of the extracellular xylanase genes in fungi, has not been extensively studied for its function in fungal development and pathogenicity in rice false smut fungus Ustilaginoidea virens. In this study, we characterized UvXlnR in U. virens and established that the full-length, N-terminal, and C-terminal forms have the ability to activate transcription. The study further demonstrated that UvXlnR plays crucial roles in various aspects of U. virens biology. Deletion of UvXlnR affected growth, conidiation, and stress response. UvXlnR mutants also exhibited reduced pathogenicity, which could be partially attributed to the reduced expression of xylanolytic genes and extracellular xylanase activity of U. virens during the infection process. Our results indicate that UvXlnR is involved in regulating growth, conidiation, stress response, and pathogenicity.

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