两种与气候相关的鸟类谱系之间的新西部核编码线粒体基因的加速分化表明了与线粒体组的潜在共同进化
Gabriel Weijie Low1,2,3, Alexandra Pavlova4, Han Ming Gan5,6
1School of Biological Sciences, Monash University, Melbourne, VIC 3800, Australia. gabelowwj@gmail.com.
Heredity
|August 22, 2024
概括
线粒体与核的共同适应是进化的关键. 在东部黄龙中,参与线粒体功能的W链基因显示出血统之间的分歧,这表明它们在气候适应中发挥了作用.
科学领域:
- 进化生物学 进化生物学
- 基因组学就是基因组学.
- 分子生物学分子生物学
背景情况:
- 线粒体与核的共同适应是显著的进化力量.
- 性染色体,特别是W-链接基因在这个过程中的作用是有争议的.
- 年轻的性染色体为共同适应动态提供了独特的见解.
研究的目的:
- 调查性别相关基因在东部黄 (EYR) 血统中线粒体核共同适应中的作用.
- 为了比较不同气候的沿海和内陆 EYR 种群之间的基因分歧模式.
- 测试关于W-链接核基因与线粒体功能 (N-mt基因) 对谱系差异化的影响的假设.
主要方法:
- 组装和注释了沿海的EYR基因组.
- 在沿海和内陆血统之间比较核基因的分歧,特别是N-mt基因.
- 分析了新性别染色体相关基因的选择模式.
- 在分歧选择下识别了候选基因.
主要成果:
- 沿海和内陆的EYR血统都具有类似的新性别染色体系统.
- 新W和新Z的N-mt基因与非N-mt基因的差异相似,对积极选择的证据有限.
- W-链接的N-mt基因在血统之间比它们的Z-链接对应物更有显著的分歧,特别是在环境选择下.
- NDUFA12被确定为驱动分歧选择的候选基因.
结论:
- 与W相关的N-mt基因可能在气候相关的适应和血统分歧中发挥关键作用.
- 这项研究为W相关的线粒体核相互作用影响适应提供了罕见的证据.
- 环境选择对W-链接的N-mt基因起作用,可能会推动与线粒基因组的共同进化.
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