Effects of salinity change on two superoxide dismutases (SODs) in juvenile marbled eel Anguilla marmorata

PeerJ

article

Li Wang¹  Xiaolu Wang¹  Shaowu Yin¹ 

[1] Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University;Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province

关键词: Anguilla marmorata;    Salinity adaptation;    Superoxide dismutases (SODs);    Redox response;   

DOI  :  10.7717/peerj.2149

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Salinity is one of the most important factors that affect the fish growth and survival. Superoxide dismutases (SODs), as the primary antioxidant enzymes, play a first role in the process of preventing oxidative stress caused by excessive superoxide anion (O2−) in living organisms. In the present study, we investigated the effects of salinity on the gene expressions as well as enzymatic activities of MnSOD and Cu/ZnSOD in gill, intestine, kidney, liver and muscle tissues of the marbled eel Anguilla marmorata. We found that the liver might possess stronger redox capacity compared with other tissues. Furthermore, the gene expressions and enzymatic activities of SODs in juvenile marbled eels could be effectively enhanced by low salinity but inhibited when the salinity was higher than the body tolerance. Our findings indicated that MnSOD and Cu/ZnSOD played vital roles in the adaptation of marbled eels to salinity variation, which contributed to the elucidation of physiological adaptation and regulatory mechanism of SODs in eels.

【 授权许可】

CC BY