鱼中古老的全基因组复制有助于它们的多样化和潮间静止生物适应
Jianbo Yuan1, Xiaojun Zhang1, Xiaoxi Zhang2
1CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Center for Ocean Mega-Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
Journal of advanced research
|September 21, 2023
概括
整个基因组复制 (WGD) 发生在超过2.47亿年前的鱼中,推动了它们的多样化和适应潮间生物. 这个古老的事件影响了与环境处理和潮反应相关的基因.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 海洋生物学 海洋生物学
背景情况:
- 全基因组重复 (WGD) 是一种罕见但重要的无脊椎动物进化事件,可能导致多样化.
- 鱼,独特的甲类与石灰质的贝和的潮间生活方式,以前没有研究过WGD.
- 在鱼中研究WGD可以揭示它们的进化历史和适应.
研究的目的:
- 为了确定是否发生了全基因组复制 (WGD) 事件.
- 探索WGD在鱼的适应性进化和多样化中的作用.
- 了解鱼适应它们独特的潮间环境的遗传基础.
主要方法:
- 染色体层次的基因组测序和装配一个鱼物种.
- 对染色体间合成,霍克斯基因集群和同义替代分布进行全面分析,以确定WGD.
- 对比基因组学和转录组分析,以调查基因保留和表达模式.
主要成果:
- 在类基因组中发现一个古老的WGD事件的证据,早于胸腔区分离 (>2.47亿年前).
- 保留的onnologs在环境信息处理途径中得到了丰富,这表明它们适应了静止的潮间生物.
- 在潮变化之后,诺基的差异表达,特别是细胞染色体P450s,表明了潮间适应的亚和新功能化.
- 并行进化也被确定为鱼中潮间适应的机制.
结论:
- 一个古老的WGD事件在鱼基因组中得到证实.
- 这种WGD可能与胸甲的起源和多样化有关.
- WGD可能有助于鱼潮间鱼生活方式的适应性进化.
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