在寒冷中产后的发展使得鸟类线粒体更容易受到热应激的影响
Maria Correia1, Elisa Thoral2, Elin Persson3
1University of Jyväskylä, Jyväskylä, Keski-Suomi, Finland.
Proceedings. Biological sciences
|June 17, 2025
概括
长在生命早期暴露于寒冷会损害细胞耐热性,如果鸟类被转移到适度温度,效果不会持续. 这突显了鸟类对环境变化的代谢反应的权衡.
科学领域:
- 鸟类生理学 鸟类生理学
- 细胞代谢的细胞代谢.
- 环境适应环境适应
背景情况:
- 极端天气事件可能会影响生物体的发育和功能.
- 温度对发育的影响背后的细胞机制尚未得到充分理解.
研究的目的:
- 调查日本的细胞线粒体对高温的反应.
- 确定生命早期的寒冷或温暖适应是否会影响耐热度.
- 评估发育温度影响的可逆性.
主要方法:
- 在寒冷 (10°C) 或温暖 (30°C) 条件下养日本.
- 血液细胞中的线粒体代谢在正常 (41°C) 和高 (45°C) 温度下被测量.
- 在测量之前,通过将鸟类移动到一个共同的花园 (20°C) 来测试可逆性.
主要成果:
- 高温症增加了线粒体质子泄漏,降低了ATP的产生和容量.
- 寒冷养的乌在热应激下,与温暖适应的乌相比,质子泄漏的增加是1.6倍.
- 这些差异消失在鸟类搬到一个共同的花园,表明缺乏发展规划.
结论:
- 在发育过程中适应寒冷会降低的细胞耐热性.
- 生命早期的温度会影响线粒体的功能,将寒冷的适应性换成热敏度.
- 这些发现为鸟类对气候变化和极端天气事件的反应提供了信息.
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