在Schizosaccharomyces pombe中 wtf Meiotic驱动基因的进化模式
Yan-Hui Xu1, Fang Suo1, Xiao-Ran Zhang1
1National Institute of Biological Sciences, Beijing 102206, China.
Genome biology and evolution
|October 11, 2024
概括
杀手介质驱动因素,就像裂变酵母中的WTF基因一样,通过基因转换和逆转移子元素进化. 这些自私的遗传元素偏向遗传,影响进化和保护基因家族免于灭绝.
科学领域:
- 遗传学 是一个遗传学.
- 进化生物学 进化生物学
- 分子生物学分子生物学
背景情况:
- 杀手性介质驱动因素是自私的遗传元素,通过消除缺少它们的配体来扭曲遗传模式.
- 杀手性介质驱动因素的演化仍然不太清楚.
- 在裂变酵母 (Schizosaccharomyces pombe) 中,WTF基因家族代表了主要的杀手介质驱动因素,导致混合不育.
研究的目的:
- 为了研究schizosaccharomyces pombe中wtf基因家族的进化机制.
- 在自然隔离物中表征WTF基因的物种内多样性.
- 确定有助于杀手介质驱动因素的进化和保存的遗传元素和过程.
主要方法:
- 从31种不同的S. pombe自然分离物中利用了基于长读的基因组组件.
- 分析了近1000个WTF基因以评估物种内部的多样性.
- 采用单核酸多态在侧边独特的序列,以识别基因转换事件和推断祖先状态.
主要成果:
- 创建了一个WTF基因内特异性多样性的综合肖像.
- 发现了基因转换事件的证据,包括WTF伪基因的复兴,这表明它在基因家族保护中的作用.
- 单独的长终端反转换子的重复被确定为潜在的重组臂,影响WTF基因调节.
- 发现了一种新型的直接定向的重复对着WTF基因,可能有助于早期基因家族的扩张.
结论:
- 基因转换和与逆转移素相关的元素是WTF杀手介质驱动家族进化和维持的关键因素.
- 确定的重复可能在WTF基因家族的初始扩张中发挥了作用.
- 这项研究提供了关于自私遗传元素复杂进化动态的见解.
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