对CLE信号基因家族的泛血管精子分析揭示了Paralog多样化的路径,模式和预测
Iacopo Gentile1,2, Miguel Santo Domingo1,2, Sophia G Zebell1,2
1Cold Spring Harbor Laboratory, Cold Spring Harbor, NY, USA.
Molecular biology and evolution
|November 13, 2025
概括
研究植物CLV3/EMBRYO-SURROUNDING REGION (CLE) 基因家族揭示了基因重复和序列变化如何产生功能冗余. 这项研究为理解基因家族进化和功能预测提供了一个框架.
科学领域:
- 进化生物学 进化生物学
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
背景情况:
- 具有广泛重复和多样化的基因家族对功能预测构成挑战.
- 植物CLV3/EMBRYO-SURROUNDING REGION (CLE) 信号家族是一个复杂的例子,具有已知的共享和特定物种的作用.
- 需要进行深入的进化分析,以了解基因家族中冗余性所掩盖的功能.
研究的目的:
- 为了对植物CLE基因家族进行全面的进化分析,超过1.4亿年.
- 根据序列和调节元件演变来预测特定于谱系的并列冗余性.
- 用基因组编辑来实验验证关于CLE基因功能和冗余性的预测.
主要方法:
- 开发了一种扫描管道,用于在2,000个基因组中对CLE基因进行新的注释.
- 利用编码和cis-regulatory区域的计算建模来预测冗余模式.
- 在Solanaceae物种中使用基因编辑和CRISPR基因编辑来测试功能假设.
主要成果:
- 发现了数千个以前未被发现的CLE基因家族成员,提供了深刻的进化观点.
- 预测和证实了与保留的功能核心和促进元件相关的并列冗余中的特定谱系不对称性.
- 通过多重淘汰番茄CLE基因,识别了射出结构和植物大小的新型调节者.
结论:
- 序列和cis调节元素的演变显著影响了CLE基因冗余.
- 该研究提供了一个利用深层进化信号的框架,以在复杂的基因家族中产生可测试的遗传假设.
- 这些发现有助于更好地理解进化过程如何在植物中产生功能多样性和冗余性.
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