Hydrogen-rich water alleviates the toxicities of different stresses to mycelial growth in Hypsizygus marmoreus

文献类型： 外文期刊

第一作者： Zhang, Jinjing

作者： Zhang, Jinjing;Hao, Haibo;Chen, Mingjie;Wang, Hong;Feng, Zhiyong;Chen, Hui;Hao, Haibo

作者机构：

关键词： Hypsizygus marmoreus;Hydrogen gas;Oxidative stress;Mycelial growth

期刊名称：AMB EXPRESS （ 影响因子：3.298； 五年影响因子：3.427 ）

ISSN： 2191-0855

年卷期： 2017 年 7 卷

页码：

收录情况： SCI

摘要： In plants, hydrogen gas - (H-2) enhances tolerance to several abiotic stresses, including salinity and heavy metals. However, the effect of - H-2 on fungal growth under different stresses remains largely unclear. In this study, hydrogen-rich water (HRW) was employed to characterize physiological roles and molecular mechanisms of - H-2 in the alleviation of three different stresses in basidiomycete Hypsizygus marmoreus. Our results showed that HRW treatment, of which the - H-2 concentration was 0.8 mM, significantly reduced the toxicities of - CdCl2, NaCl and - H2O2, leading to significantly improved mycelial growth and biomass. These beneficial effects could be attributed to a significantly decreased formation of malondialdehyde (MDA). Besides, HRW treatment significantly increased the activities of antioxidants (SOD, CAT and GR) as well as the gene expressions of these antioxidants (SOD, CAT, and GR) at the mRNA level. In vivo detection of reactive oxygen species (ROS), including - H2O2 and - O-2(-), as well as lipid peroxidation provided further evidence that HRW could significantly improve tolerances of - CdCl2, NaCl and - H2O2. Furthermore, pyruvate kinase was activated in the mycelia treated with HRW, along with its induced gene expression, suggesting that HRW treatment enhanced the glucose metabolism. Taken together, our findings suggested that the usage of HRW could be an effective approach for contaminant detoxification in H. marmoreus, which was similar with the effects of HRW in plants, and such effects could be also beneficial in entire agricultural system.

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