Molecular Adaptations and Quality Enhancements in a Hybrid (Erythroculter ilishaeformis ♀ x Ancherythroculter nigrocauda ♂) Cultured in Saline-Alkali Water
文献类型： 外文期刊
作者： Zhang, Lang 1 ; Qin, Qiuying 2 ; Li, Qing 3 ; Yu, Yali 1 ; Song, Ziwei 1 ; He, Li 1 ; Sun, Yanhong 3 ; Ye, Liting 1 ; Wang, Guiying 3 ; Xu, Jing 2 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China
2.South Cent Univ Nationalities, Coll Pharm, Wuhan 430074, Peoples R China
3.Wuhan Acad Agr Sci, Fisheries Res Inst, Wuhan 430207, Peoples R China
4.Wuhan Xianfeng Aquaculture Technol Co Ltd, Wuhan 430207, Peoples R China
关键词： saline-alkali stress; antioxidant defense; immune response; environment; nutrition
期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 14 卷 6 期
页码：
收录情况： SCI
摘要： Declining freshwater resources have spurred interest in saline-alkali (SA) water aquaculture, with species like tilapia and rainbow trout demonstrating ecological plasticity in such environments. However, the molecular mechanisms underlying fish adaptation and quality impacts remain unclear. This study investigated the hybrid fish "Xianfeng No. 1" (Erythroculter ilishaeformis x Ancherythroculter nigrocauda), a key aquaculture species in China, under 60-day SA exposure. The results showed increased levels of oxidative stress markers (MDA) and antioxidant enzymes (SOD, CAT, GSH-Px), alongside improved quality traits. Transcriptomics revealed differentially expressed genes (DEGs) in muscle tissue associated with oxidative stress (UQCRFS1, UQCR10, CYC1), ion transport (COX5A, COX7C, COX7B), and the immune response (ATG9A, ATG2B, ATG2A, ULK1, ULK2, CFI, CFH). Metabolomics identified increased non-volatile flavors (e.g., glycine, proline) and collagen-related compounds. Integrated analysis highlighted the upregulation of GSR and GGT, and the downregulation of CHDH and GBSA, potentially driving glycine accumulation. These findings suggest that SA stress enhances antioxidant capacity, activates immune pathways, and modulates ion transport, enabling adaptation while improving meat quality. This study elucidates molecular mechanisms of fish acclimation to SA environments, providing insights for sustainable aquaculture development and breeding of stress-tolerant species in SA regions.
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