替代拼接和基因表达变异是两动物人口和生命史差异的基础
Juntao Hu1, Xingyue Ren1, Rowan D H Barrett2
1Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Center for Evolutionary Biology, School of Life Sciences, Institute of Biodiversity Science Fudan University Shanghai People's Republic of China.
Ecology and evolution
|November 18, 2025
概括
木的表型变异是由转录基因可塑性驱动的. 基因表达和替代拼接揭示了生命阶段和种群之间的差异,即使是基因流动.
科学领域:
- 进化生物学 进化生物学
- 分子生物学分子生物学
- 环境科学 环境科学
背景情况:
- 现型变异很常见,但分子机制的理解很少.
- 基因表达和替代拼接是影响适应性和可塑性的关键转录后过程.
- 森林青 (Rana sylvatica) 提供了一个模型系统,因为它们的复杂生命周期和适应环境梯度.
研究的目的:
- 研究分子机制,特别是基因表达和替代拼接,是木种群的表型分歧的基础.
- 评估道路相邻性和污染如何影响转录基因差异.
- 了解塑性与遗传差异在人口差异中的作用.
主要方法:
- 对木青基因表达和替代拼接的比较转录组分析.
- 检查道路邻和污染梯度的人口.
- 分析幼和成年人之间的差异,以及路边和林地种群之间的差异.
主要成果:
- 成千上万的基因在木生命阶段 (幼与成年人) 之间表现出差异性表达和拼接.
- 转录基因特征 (表达和拼接) 根据人群强烈聚集,表明人群特异性反应.
- 两个差异表达的基因 (HSP70,Gpsm2) 和一个差异拼接的基因 (Cd82) 区分了路边和林地种群.
- 低遗传差异化表明,转录组差异源于可塑性.
结论:
- 转录性可塑性,包括基因表达和替代拼接,是木在发育和种群差异化过程中表型变异的重要驱动因素.
- 环境因素,如道路接近和污染,可以诱导特定的转录基因变化.
- 塑性反应在适应和分歧中起着至关重要的作用,即使面对基因流动.
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