在酵母中发现了更多的古代基因组复制
Kyle T David1, Linda Horianopoulos2,3, Carla Gonçalves4
1Department of Biological Sciences, Vanderbilt University, Nashville, TN 37235, USA; Evolutionary Studies Initiative, Vanderbilt University, Nashville, TN 37235, USA.
bioRxiv : the preprint server for biology
|September 15, 2025
概括
在真菌中,全基因组复制 (WGD) 事件是罕见的. 这项研究在Saccharomycotina亚族中发现了三种新的古老的WGD,这表明WGD在真菌中是一个比以前认为的更常见的进化力.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 菌类学 菌类学是指菌类学.
背景情况:
- 整个基因组复制 (WGD) 显著影响各种生命形式的宏观进化辐射,包括脊椎动物,远鱼和血管精子.
- 尽管动物和植物中有许多古老的WGD,但真菌中的证据有限,只有四个已知的事件,这引发了关于真菌基因组进化的疑问.
研究的目的:
- 研究古老的全基因组复制 (WGD) 事件的频率和影响,在真菌亚属Saccharomycotina.
- 通过探索基因组数据以寻找新的重复事件来解决真菌中明显罕见的WGD的神秘问题.
主要方法:
- 最近发表的数百个Saccharomycotina基因组的全基因组分析.
- 整合了三个额外的长时间读取的基因组组合,以提高分辨率.
- 对比基因组分析以识别新的WGD事件和保留重复基因.
主要成果:
- 在Saccharomycotina中发现了三种以前未知的古代全基因组复制 (WGD) 事件.
- 鉴定了这些新型WGD中保留的重复基因,其功能与已知Saccharomycetales WGD的基因相似.
- 证据质疑了WGD的真菌血统迅速灭绝的假设.
结论:
- 整个基因组复制 (WGD) 似乎是真菌中比以前认识的更常见的进化机制.
- 这些发现表明,真菌基因组可以在WGD事件后容纳和保留重复的基因,从而为进化创新做出贡献.
- 进一步的基因组探索是有必要的,以揭示WGD在真菌进化中的全部程度.
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