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Sulfide Treatment Alters Antioxidant Response and Related Genes Expressions in Rice Field Eel (Monopterus albus)

文献类型： 外文期刊

作者： Zhong, Liqiao 1 ; Yao, Fan 1 ; Zhang, He 3 ; Xie, Huaxiao 1 ; Ru, Huijun 1 ; Wei, Nian 1 ; Ni, Zhaohui 1 ; Li, Zhong 1 ; Li, Yunfeng 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

2.Minist Agr & Rural Affairs, Fishery Resources & Environm Sci Expt Stn Upper M, Wuhan 430223, Peoples R China

3.Wenzhou Univ, Coll Life & Environm Sci, Natl & Local Joint Engn Res Ctr Ecol Treatment Te, Zhejiang Prov Key Lab Subtrop Water Environm & Ma, Wenzhou 325035, Peoples R China

关键词： sulfide; rice field eel; oxidative stress; physiological stress

期刊名称：WATER （ 影响因子：3.53； 五年影响因子：3.628 ）

ISSN：

年卷期： 2022 年 14 卷 20 期

页码：

收录情况： SCI

摘要： Sulfide is considered as an environmental factor and toxicant with a wide distribution in aquatic environments. At present, the toxic effects of sulfide stress on rice field eel (Monopterus albus) are poorly understood. To ascertain these effects, the juvenile rice field eels were exposed to sub-lethal concentrations of Na2S (0, 0.2154, 2.154, and 21.54 mg/L) for 7, 14, and 28 days. Antioxidant parameters such as catalase (CAT), superoxide dismutase (SOD), glutathione peroxidase (GPx), and malondialdehyde (MDA) as well as the related gene (including sod, cat) expressions were measured. The expressions of metallothionein (mt) and heat shock protein 90 (hsp90), which are used as physiological stress indices, were also detected. The results showed that exposure to sulfide altered the antioxidant response and related gene expressions in rice field eel. The activities of SOD were inhibited and the MDA contents were increased after exposure to sulfide. The activities of CAT and GPx were increased at 7 days and decreased at 28 days after treatment with sulfide at the highest dose. The expressions of sod, cat, and hsp90 were upregulated at 7 days and downregulated at 14 and 28 days after exposure to high doses of sulfide. The expression of mt was significantly downregulated in all sulfide treated groups. The toxic effects caused by sulfide were in dose-dependent and time-dependent manners. In short, oxidative stress and physiological stress were caused in rice field eel after the exposure to sulfide.

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