基于RAD-seq和基因组脱皮分析的Prunus (Rosaceae) 的分子分化和花朵进化
Na Su1,2, Richard G J Hodel3, Xi Wang1,2
1College of Life Sciences, Northwest A&F University, Yangling 712100, China.
Plant diversity
|August 21, 2023
概括
这项研究通过使用核和塑性质DNA来解决经济重要普鲁努斯属的原生学. 它揭示了基于花类型的三个主要分类,并表明古气候事件推动了多样化.
科学领域:
- 植物学 植物学
- 进化生物学 进化生物学
- 基因组学就是基因组学.
背景情况:
- 普鲁努斯 (Prunus) 属,包括经济上重要的物种,具有复杂的进化历史,具有相互矛盾的遗传学假设.
- 了解普鲁努斯的进化关系和多样化模式对于科学和农业目的至关重要.
研究的目的:
- 使用核和塑体基因组数据生成Prunus属的精确分类.
- 研究Prunus.的进化历史,多样化时间和花朵进化.
- 为了测试有关某些普鲁努斯群的杂交起源的假设.
主要方法:
- 核缩小表示测序和整体塑基因组测序在36个Prunus个体和两个外组中进行.
- 用核和塑体数据集进行了家族遗传学分析.
- 祖先状态的重建被用来推断花朵的进化.
主要成果:
- 核和塑体数据都产生了明确的原生学,根据花类型将普鲁努斯分为三个主要分类:种族花,单花花和花花.
- 普鲁努斯在白纪晚期 (67.32亿年前) 实现了多样化,主要的分类多样化发生在古世到中世.
- 祖先状态重建表明,最近的共同祖先有种族花朵的花朵,单一的花朵和corymbose类型随后进化. 检测到广泛的杂交事件,尽管很难用SNP数据确定特定的实例.
结论:
- 这项研究为普鲁努斯提供了强大的核和塑系,澄清了进化关系.
- 古气候事件可能在主要的普鲁努斯族群的多样化中发挥了重要作用.
- 普鲁努斯的花进化涉及花数的减少和拉基斯的抑制,在整个历史中都有广泛的杂交的证据.
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