The functions of glutathione peroxidase in ROS homeostasis and fruiting body development in Hypsizygus marmoreus
文献类型： 外文期刊
作者： Zhang, Jinjing 1 ; Hao, Haibo 1 ; Wu, Xuelan 1 ; Wang, Qian 1 ; Chen, Mingjie 1 ; Feng, Zhiyong 1 ; Chen, Hui 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Natl Res Ctr Edible Fungi Biotechnol & Engn, Key Lab Appl Mycol Resources & Utilizat,Minist Ag, Shanghai Key Lab Agr Genet & Breeding,Inst Edible, Shanghai 201403, Peoples R China
2.Nanjing Agr Univ, Coll Life Sci, 1 Weigang Rd, Nanjing 210095, Peoples R China
关键词： Hypsizygus marmoreus; Glutathione peroxidase; ROS homeostasis; GSH; GSSG; Fruiting body development; Mitochondria
期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：4.813； 五年影响因子：4.697 ）
ISSN： 0175-7598
年卷期： 2020 年 104 卷 24 期
页码：
收录情况： SCI
摘要： Glutathione peroxidase (GPX) is one of the most important antioxidant enzymes for maintaining reactive oxygen species (ROS) homeostasis. Although studies on fungi have suggested many important physiological functions of GPX, few studies have examined the role of this enzyme in Basidiomycetes, particularly its functions in fruiting body developmental processes. In the present study, GPX-silenced (GPxi) strains were obtained by using RNA interference. The GPxi strains of Hypsizygus marmoreus showed defects in mycelial growth and fruiting body development. In addition, the results indicated essential roles of GPX in controlling ROS homeostasis by regulating intracellular H2O2 levels, maintaining GSH/GSSG balance, and promoting antioxidant enzyme activity. Furthermore, lignocellulose enzyme activity levels were reduced and the mitochondrial phenotype and mitochondrial complex activity levels were changed in the H. marmoreus GPxi strains, possibly in response to impediments to mycelial growth and fruiting body development. These findings indicate that ROS homeostasis has a complex influence on growth, fruiting body development, GSH/GSSG balance, and carbon metabolism in H. marmoreus.
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