一个基因组热点的选择多样化和结构变化在色蝙蝠 (Lasiurus cinereus) 的
1U.S. Geological Survey, Fort Collins Science Center, Fort Collins, Colorado, United States.
PeerJ
|June 4, 2024
概括
黄蝙蝠显示了一个集中的基因组区域,具有快速进化的基因,这表明该区域的进化加速. 这个热点还具有显著的结构变化,特别是与大脑相关的基因.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 进行比较基因组学.
背景情况:
- 之前的研究已经确定了许多被积极选择的基因,这些基因在 (Lasiurus cinereus) 血统中聚集在保存的合成区域中.
- 这项研究基于使用更新的L. cinereus基因组组件的先前发现,并包括额外的蝙蝠物种和四足动物外组.
研究的目的:
- 验证和扩展之前关于L. cinereus.基因聚类和阳性选择的发现.
- 与其他四足动物相比,研究蝙蝠血统中的基因组组织和基因的进化模式.
主要方法:
- 使用染色体接触映射生成了染色体水平组件.
- 从多个蝙蝠物种和四足动物类的注释数据中提取了正统基因的基因组组织.
- 使用PAML和HyPhy进行了特定行业的积极选择测试.
主要成果:
- 在L. cinereus的显著多样化选择下确定了12个基因,在12Mb窗口内聚集在一起.
- 发现了两个不同的古老合成基因块,其中包含这些基因,这些基因在其他四足动物中没有联系.
- 在蝙蝠中观察到这些合成块内的频繁结构重组,这对头骨和神经发育有影响.
结论:
- 证实并定位了一种蛋白质编码分歧的基因组热点.
- 与其他哺乳动物相比,在这些合成块内,蝙蝠的结构变化速度增加.
- 突出了特定基因在和神经发育中的潜在作用,得到了大脑组织表达的增加的支持.
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