人口历史和两个化基因的独特选择签名在mungbean
Ya-Ping Lin1,2, Hung-Wei Chen1, Pei-Min Yeh1
1Institute of Ecology and Evolutionary Biology, National Taiwan University, Taipei 10617, Taiwan.
Plant physiology
|June 19, 2023
概括
在豆中,化揭示了复杂的选择模式. 粉碎和茎决定性的基因显示出明显的进化特征,挑战了简单的选择性扫描模型.
科学领域:
- 植物遗传学和进化生物学
- 农作物化研究研究
- 选择的基因组分析.
背景情况:
- 农作物化涉及人工选择,改变基因组并留下选择痕迹.
- 在选择模型下,化基因的进化模式尚未完全理解.
- 豆 (Vigna radiata) 作为研究化过程的模型.
研究的目的:
- 为了研究控制关键化特征的基因的进化模式.
- 解决豆的人口统计历史,并确定选择的分子足迹.
- 为了比较代表不同养阶段的特征的选择特征.
主要方法:
- 豆 (Vigna radiata) 的全基因组再测序,以分析基因组变异.
- 全球人口统计历史和迁移模式的重建.
- 对与破阻力 (VrMYB26a) 和茎确定性 (VrDet1) 相关的基因的有针对性的分析.
主要成果:
- 豆起源于亚洲,野生种群在5万年前迁移到澳大利亚.
- 粉碎阻力 (VrMYB26a) 显示了硬选择性扫描的特征 (减少多态性,较低的表达).
- 干的确定性 (VrDet1) 显示出软选择性扫描的特征 (古老的单元型,中间频率,较低的表达).
结论:
- 对于两个关键的化特征,确定了对比的选择特征 (硬和软扫描).
- 化的遗传结构复杂,涉及不同的选择机制.
- 仅依靠硬选择性扫描的基因组扫描方法可能低估了养的复杂性.
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