盐度依赖的反应在急性低温应激期间区分分枝状离子调节在欧线的印度Medaka
Naveen Ranasinghe1,2, Salman Akram3, Shi-Shien Lee4
1Department of Life Sciences, College of Life Sciences, National Chung Hsing University, 145, Xingda Road, Taichung, 402, Taiwan.
Fish physiology and biochemistry
|September 17, 2025
概括
寒冷压力对鱼的状功能的影响在淡水和海水中不同. 适应海水的鱼类表现出增强的细胞反应和适应,改善了对寒冷的耐受性,这对水产养殖至关重要.
科学领域:
- * 鱼类生理学和环境应激反应.
- * 分子和细胞适应盐度和温度.
- * 水产养殖和渔业科学.
背景情况:
- * 功能对于远距离鱼类的平衡至关重要,特别是离子调节.
- * 寒冷压力对状功能的影响,特别是盐度,需要进一步研究.
- * 了解这些影响对于在不断变化的水生环境中管理鱼类至关重要.
研究的目的:
- * 调查寒冷应激对适应淡水 (FW) 和海水 (SW) 的印度梅达卡沟功能的影响.
- *阐明了依赖盐度的寒冷耐受性背后的分子和细胞机制.
- * 确定提高水产养殖中耐寒性的潜在策略.
主要方法:
- *印度梅达卡适应FW和SW,随后暴露于冷应力 (18°C168小时).
- *对亡标记物 (Caspase-3) 和抗亡基因表达 (birc5) 的分析.
- *转录组分析以确定与离子调节,调节和应激反应相关的差异表达基因和途径.
主要成果:
- * 寒冷压力增加了SW适应鱼类的亡标志物Caspase-3,在FW和SW中对birc5的差异性表达.
- *转录组学揭示了FW和SW中不同的基因表达模式,涉及代谢途径,压力信号,运输和细胞维护.
- * Na+/K+-ATPase (NKA) 子单元和离子运输基因以及紧结 (TJ) 和间隙结 (GJ) 基因的表达受到寒冷和盐度的显著影响.
结论:
- * 欧鱼表现出优越的分子和细胞适应在海水中的寒冷压力.
- *盐度增强了对寒冷压力的状反应,改善了细胞的完整性和功能.
- * 通过了解盐度诱导的适应,这些发现为改善水产养殖物种的耐寒性提供了洞察力.
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