Myo-inositol enhances the low-salinity tolerance of turbot (Scophthalmus maximus) by modulating cortisol synthesis
文献类型： 外文期刊
作者： Cui, Wenxiao 1 ; Ma, Aijun 2 ; Wang, Xinan 2 ; Huang, Zhihui 2 ;
作者机构： 1.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai 201306, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Shandong Key Lab Marine Fisheries Biotechnol & Ge, Qingdao Key Lab Marine Fish Breeding & Biotechnol, Qingdao 266071, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
关键词： Turbot; myo-inositol; Low salinity; Cortisol; Osmoregulation
期刊名称：BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS （ 影响因子：3.575； 五年影响因子：3.381 ）
ISSN： 0006-291X
年卷期： 2020 年 526 卷 4 期
页码：
收录情况： SCI
摘要： Myo-inositol is a major intracellular osmolyte that can be accumulated to protect cells from a variety of stresses, including fluctuations in the osmolality of the environment, and cortisol is thought to be an osmotic hormone in teleost fish. In this study, dietary myo-inositol resulted in increased Na+-K+-ATPase activity and gene expression of partial ion channel genes and prolonged survival time of turbot (Scophthalmus maximus) under low salinity. The cortisol regulated by dietary myo-inositol also was correlated with these outcomes. The optimal concentrations of cortisol stimulated gill Na+-K+-ATPase activity and increased the expression of ion channel genes to enhance low salinity tolerance, as indicated by longer survival time under low salinity. When cortisol level was suppressed, myo-inositol failed to increase the survival time of turbot under low salinity, and strong correlations between cortisol concentration and Na+-K+-ATPase activity, expression of partial ion channel genes, and survival time of turbot were detected. These results showed that myo-inositol enhanced the low salinity tolerance of turbot by modulating cortisol synthesis. (C) 2020 Elsevier Inc. All rights reserved.
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