门德尔特征的主导地位的演变与环境可塑性的演变有关
Yuichi Fukutomi1, Alexandra Phillips-Garcia1, Jingqi Liu1
1Department of Evolution and Ecology, University of California - Davis, Davis, CA, USA.
bioRxiv : the preprint server for biology
|July 15, 2025
概括
遗传优势和表型可塑性影响进化. 这项研究揭示了POU域动机3 (pdm3) 基因中的温度依赖可塑性解释了Drosophila颜色变态的不同主导关系.
科学领域:
- 进化遗传学的进化遗传学
- 发育生物学是发展生物学.
- 草虫的研究研究Drosophila.
背景情况:
- 位主导和表型可塑性是遗传变异如何转化为可观察的特征和影响进化轨迹的关键因素.
- 这两种现象都可能导致突然的表型变化,以应对遗传或环境变化,这表明相互关联的发育机制.
- 在Drosophila montium谱系中,一个限于女性的颜色二态性为研究主导性和可塑性之间的相互作用提供了一个模型.
研究的目的:
- 通过使用Drosophila的颜色二态化来研究等位体主导和表型可塑性之间的机制联系.
- 确定色彩二态的遗传基础和不同物种之间不同主导关系的原因.
- 探索环境因素,特别是温度在调节主导关系中的作用.
主要方法:
- 在Drosophila montium血统中对孟德尔色彩二态的遗传分析.
- 识别POU域动图3 (pdm3) 基因作为控制颜色二态化的位置.
- 对发育温度的实验操纵,以评估不同物种的表型可塑性和主导关系.
主要成果:
- 在黑暗主导和光主导物种中,颜色二态性是由相同的位置控制的,即pdm3转录因子.
- 统治性的跨物种差异是由表型可塑性的变化解释的.
- 在光主导物种中,光等位基因的优势取决于温度,在更高的温度下增加,与黑暗主导物种不同.
结论:
- 在等位基主导和表型可塑性演变之间存在机械联系.
- 发育系统中的值特性可能是主导性和可塑性之间的联系的基础.
- 发育途径的环境敏感性可以塑造主导关系的演变.
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