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MAT1-1-3, a Mating Type Gene in theVillosiclava virens, Is Required for Fruiting Bodies and Sclerotia Formation, Asexual Development and Pathogenicity

文献类型: 外文期刊

作者: Yong, Mingli 1 ; Yu, Junjie 1 ; Pan, Xiayan 1 ; Yu, Mina 1 ; Cao, Huijuan 1 ; Qi, Zhongqiang 1 ; Du, Yan 1 ; Zhang, Rongs 1 ;

作者机构: 1.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing, Peoples R China

关键词: mating type gene; Villosiclava virens; MAT1-1-3; sexual development; 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: Villosiclava virensis the prevalent causative pathogen of rice false smut, a destructive rice disease. Mating-type genes play a vital role in the evolution of mating systems in fungi. Some fungi have lostMAT1-1-3, one of the mating-type genes, during evolution, whereas others still retainMAT1-1-3. However, howMAT1-1-3regulates the sexual development of heterothallicV. virensremains unknown. Here, we generated theMAT1-1-3mutants, which exhibited defects in vegetative growth, stress response, pathogenicity, sclerotia formation and fruiting body maturation. An artificial outcrossing inoculation assay showed that the Delta mat1-1-3mutant was unable to produce sclerotia. Unexpectedly, the Delta mat1-1-3mutant could form immature fruiting bodies without mating on potato sucrose agar medium (PSA) compared with the wild-type strain, most likely by activating the truncatedMAT1-2-1transcription to regulate the sexual development. Moreover, RNA-seq data showed that knockout ofMAT1-1-3results in misregulation of a subset of genes involved in sexual development, MAPK signaling, cell wall integrity, autophagy, epigenetic modification, and transcriptional regulation. Collectively, this study reveals thatMAT1-1-3is required for asexual and sexual development, and pathogenicity ofV. virens, thereby provides new insights into the function of mating-type genes in the fungi life cycle and infection process.

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