循环可塑性通过神经基因的调节变化而演变
Michael P Shahandeh1,2, Liliane Abuin3, Lou Lescuyer De Decker3
1Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland. Michael.P.Shahandeh@hofstra.edu.
Nature
|October 16, 2024
概括
神经色素分散因子 (Pdf) 基因
科学领域:
- 进化生物学
- 时间生物学
- 遗传学
背景情况:
- 在许多生物体中,循环可塑性,即调整日常活动模式以适应光周期的能力是常见的.
- 这种特征的演变及其遗传基础仍然不太清楚.
- 黄虫表现出昼夜可塑性,而特殊的黄虫已经失去了这种能力.
研究的目的:
- 调查生日可塑性演变的基因机制.
- 为了比较Drosophila melanogaster和Drosophila sechellia之间神经色素分散因子 (Pdf) 基因在昼夜可塑性的作用.
主要方法:
- 对Drosophila melanogaster和Drosophila sechellia进行比较分析.
- 在跨物种混合物中选昼夜突变物.
- 在Drosophila melanogaster中进行RNA干扰和救援实验.
- 在Pdf基因中分析 cis调节分歧和选择信号.
主要成果:
- 神经色素分散因子 (Pdf) 基因有助于Drosophila sechellia的昼夜可塑性丧失.
- 由 cis 调节差异驱动的 Pdf 的特定物种时间表达影响行为可塑性.
- Pdf调控区域显示了两种物种的选择迹象,与度和专业化相关.
- 在较高的度上,日复一日的可塑性为Drosophila melanogaster提供了选择性的优势.
结论:
- 这种PDF基因是生日可塑性进化的关键基因.
- 在Pdf监管中的分歧塑造了Drosophila物种的分布和专业化.
- 了解Pdf的作用可以揭示适应不同的光环境和物种.
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