塑性菌谱学揭示了Caryophyllaceae的骨干关系,分歧时间和性格演变
Haiwen Li1, Shiqiang Song1, Hans Peter Comes2
1College of Life Sciences and Technology, Tarim University, Alar, 843300, China.
BMC plant biology
|March 10, 2026
概括
这项研究解决了Caryophyllaceae家族树,揭示了11个部落及其进化历史. 这些部落的多样化受到全球冷却等重大气候变化的影响.
科学领域:
- 植物进化生物学 植物进化生物学
- 人类基因组学是什么?
- 系统学 系统学 系统学
背景情况:
- 卡里奥菲拉塞亚家族的传统子家族缺乏单一性.
- 在Caryophyllaceae中,遗传学关系和分歧时间需要进一步调查.
研究的目的:
- 为了对Caryophyllaceae家族进行全面的基因组学分析.
- 解决部落关系,推断分歧时间,重建祖先状态.
主要方法:
- 使用塑体组数据进行的基因组学分析.
- 差异时间估计.
- 使用贝叶斯二进制模型 (BBM) 的祖先状态重建.
主要成果:
- 支持Caryophyllaceae的单,其冠状年龄约为564万年.
- 传统的子家族是非单一的,但11个部落之间的关系是完全解决.
- 新的部落布置包括Eremogoneae,Sileneae和Caryophylleae中的Thylacospermum的姐妹;祖先状态包括stipules,自由分,缺席的花,五个茎,和utricle/achene果实.
结论:
- 这项研究为Caryophyllaceae提供了第一个全面的族系学框架,定义了11个部落.
- 卡里奥菲拉赛的初始分歧可能与古世 - 世热极限相吻合.
- 部落的多样化与代晚期和代-代冷却和干旱事件有关.
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