MAT Loci Play Crucial Roles in Sexual Development but Are Dispensable for Asexual Reproduction and Pathogenicity in Rice Blast Fungus Magnaporthe oryzae
文献类型： 外文期刊
作者： Wang, Jiao-yu 1 ; Wang, Shi-zhen 1 ; Zhang, Zhen 1 ; Hao, Zhong-na 1 ; Shi, Xiao-xiao 1 ; Li, Ling 2 ; Zhu, Xue-ming 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Managing Biot & Chem Treats Qual &, Hangzhou 310021, Peoples R China
2.Zhejiang Agr & Forest Univ, Sch Agr & Food Sci, Hangzhou 311300, Peoples R China
3.Zhejiang Univ, Inst Biotechnol, Hangzhou 310058, Peoples R China
4.Zhejiang Univ, Agr Expt Stn, Hangzhou 310058, Peoples R China
关键词： MAT loci; MAT genes; sexual reproduction; pathogenicity; Magnaporthe oryzae
期刊名称：JOURNAL OF FUNGI （ 影响因子：5.816； 五年影响因子：6.499 ）
ISSN：
年卷期： 2021 年 7 卷 10 期
页码：
收录情况： SCI
摘要： Magnaporthe oryzae, a fungal pathogen that causes rice blast, which is the most destructive disease of rice worldwide, has the potential to perform both asexual and sexual reproduction. MAT loci, consisting of MAT genes, were deemed to determine the mating types of M. oryzae strains. However, investigation was rarely performed on the development and molecular mechanisms of the sexual reproduction of the fungus. In the present work, we analyzed the roles of two MAT loci and five individual MAT genes in the sex determination, sexual development and pathogenicity of M. oryzae. Both of the MAT1-1 and MAT1-2 loci are required for sex determination and the development of sexual structures. MAT1-1-1, MAT1-1-3 and MAT1-2-1 genes are crucial for the formation of perithecium. MAT1-1-2 impacts the generation of asci and ascospores, while MAT1-2-2 is dispensable for sexual development. A GFP fusion experiment indicated that the protein of MAT1-1-3 is distributed in the nucleus. However, all of the MAT loci or MAT genes are dispensable for vegetative growth, asexual reproduction, pathogenicity and pathogenicity-related developments of the fungus, suggesting that sexual reproduction is regulated relatively independently in the development of the fungus. The data and methods of this work may be helpful to further understand the life cycle and the variation of the fungus.
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