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在一个城市引入的热极限的转录学
Samantha S Fontaine1, Brian K Trevelline1
1Department of Biological Sciences, Kent State University, 800 E. Summit St, Kent, OH, 44242, USA.
Journal of thermal biology
|November 8, 2025
概括
基因表达可塑性有助于动物适应热等环境压力因素. 短暂的热量暴露在常见壁中强烈改变了基因表达,这表明这种适应能力有助于范围扩张.
科学领域:
- 环境生理学环境生理学
- 分子生物学分子生物学
- 生态生态学 生态生态学
背景情况:
- 生理可塑性有助于动物应对环境压力因素.
- 温度压力是一个重大的威胁,特别是对ectotherms.
- 在自然界中常见的快速热应激暴露可以改变基因表达.
研究的目的:
- 在普通壁 (Podarcis muralis) 中评估基因表达可塑性,以应对短暂的极端热应激.
- 为了比较不同组织中对热和冷应激的转录组反应.
- 评估基因表达可塑性在促进物种范围扩张方面的潜力.
主要方法:
- 用RNA测序来比较暴露在临界热最大 (CTmax),临界热最小 (CTmin) 或对照条件下的的转录组.
- 子经历了快速升级到极端的热量,随后恢复.
- 分析了心脏,肝脏和大肠组织.
主要成果:
- 在所有组织中,热应激诱导的基因表达反应明显强于冷应激.
- 热暴露后观察到热冲击蛋白和应激反应途径的系统上调.
- 暴露于热量还以组织特定的方式改变了转录,翻译和代谢过程.
结论:
- 作为热应激反应的基因表达可塑性可能会促进普通壁的范围扩张.
- 短暂的热暴露会引起强烈的全身基因表达反应.
- 需要进一步的研究来理解对自然温度波动的转录基因反应.
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