Integrated application of multi-omics approach and biochemical assays provides insights into physiological responses to saline-alkaline stress in the gills of crucian carp (Carassius auratus)
文献类型： 外文期刊
作者： Liu, Yingjie 1 ; Yao, Mingzhu 1 ; Li, Shanwei 1 ; Wei, Xiaofeng 2 ; Ding, Lu 1 ; Han, Shicheng 1 ; Wang, Peng 1 ; Lv, Bochuan 4 ; Chen, Zhongxiang 1 ; Sun, Yanchun 1 ;
作者机构： 1.Minist Agr & Rural Areas, Heilongjiang River Fisheries Res Inst, Lab Qual & Safety Risk Assessment Aquat Prod Harb, Chinese Acad Fishery Sci, Harbin 150070, Peoples R China
2.Shanghai Ocean Univ, Coll Food Sci & Technol, Shanghai 201306, Peoples R China
3.Dalian Ocean Univ, Sch Food Sci & Engn, Dept Food Sci & Engn, Dalian 116023, Peoples R China
4.Heilongjiang Univ Chinese Med, Affiliated Hosp 1, Harbin 150006, Peoples R China
关键词： Saline-alkaline stress; Crucian carp; Metabolomics; Transcriptomics; Gill
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：10.753； 五年影响因子：10.237 ）
ISSN： 0048-9697
年卷期： 2022 年 822 卷
页码：
收录情况： SCI
摘要： Given the decline of freshwater resources in recent years, the accessible space for freshwater aquaculture is rapidly shrinking, and aquaculture in saline-alkaline water has become a critical approach to meet the rising demand. How-ever, the molecular mechanism behind the adverse effects of saline-alkaline water on fish and the regulatory mecha-nism in fish tolerance remains unclear. Here, adult crucian carp (Carassius auratus) were exposed to 60 mmol/L NaHCO3 for 30 days. It was observed that long-term carbonate alkalinity (CA) exposure not only caused gill oxidative stress but also changed the levels of several physiological parameters associated with ammonia transport, including blood ammonia, urea nitrogen (BUN), glutamine (Gln), and glutamine synthetase (GS). According to the metabolomics study, differential metabolites (DMs) engaged in various metabolic pathways, such as glycerophospholipid metabo-lism, sphingolipid metabolism, and arachidonic acid metabolism. In addition, transcriptomics data showed that differ-entially expressed genes (DEGs) were closely related to ammonia transport, apoptosis, and immunological response. In general, comprehensive multi-omics and biochemical analysis revealed that crucian carp might adopt Rh glycoprotein as a carrier to mediate ammonia transport and increase glutamine and urea synthesis under long-term high saline-alkaline stress to mitigate the adverse effects of blocked ammonia excretion. Simultaneously, saline-alkaline stress caused the destruction of the antioxidant system and the disorder of lipid metabolism in the crucian carp gills, which induced apoptosis and immunological response. To our knowledge, this is the first study to investigate fish's molecular and metabolic mechanisms under saline-alkaline stress using integrated metabolomics, transcriptomics, and biochemical assays. Overall, the results of this study provided new insights into the molecular mechanism behind the adverse effects of saline-alkaline water on fish and the regulatory mechanism in fish tolerance.
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