Gill physiological and transcriptomic response of the threatened freshwater mussel Solenaia oleivora to salinity shift
文献类型： 外文期刊
作者： Zhang, Ting 1 ; Yao, Jingting 1 ; Xu, Dongpo 1 ; Ma, Xueyan 1 ; Jin, Wu 1 ; Lv, Guohua 1 ; Gu, Ruobo 1 ; Wen, Haibo 1 ; Zhou 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, 9 Shanshui East Rd,Xuelang St, Wuxi 214081, Jiangsu, Peoples R China
关键词： Solenaia oleivora; Salinity; Oxidative stress; Immune; Transcriptome
期刊名称：COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS （ 影响因子：2.674； 五年影响因子：2.941 ）
ISSN： 1744-117X
年卷期： 2021 年 40 卷
页码：
收录情况： SCI
摘要： Solenaia oleivora, a freshwater shellfish endemic to China, is becoming one of the most threatened freshwater mussels owing to water pollution, habitat fragmentation, and overfishing. Hence, exploring its response to different environmental factors is important for its conservation. In this work, we investigated the physiological and transcriptomic response of S. oleivora to increased salinity. We found that increased salinity caused the death of S. oleivora. High salinity caused shrinking and deformation of gill filaments, reduced gill cilia, and induced cell apoptosis in gills. The activities of superoxide dismutase (SOD), catalase (CAT), acid phosphatase (ACP), alkaline phosphatase (AKP), as well as glutathione (GSH) content were increased at the beginning of salinity stress (3-12 h), while SOD and ACP activities decreased at 48 h. Transcriptome data revealed that high salinity stress (48 h) induced 766 differentially expressed genes (DEGs). Among these DEGs, the majority of the stress response and ion transport-related genes were up-regulated, while most of the immune-related genes were down-regulated. In conclusion, these findings suggest that the antioxidant and immune functions of S. oleivora can be inhibited by high salinity, which may be one of the main reasons for its low survival rate under conditions of increasing salinity.
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