橄家族 (Oleaceae) 的遗传学和生物地理学
Julia Dupin1, Cynthia Hong-Wa2, Myriam Gaudeul3
1CNRS, Université Paul Sabatier, IRD, UMR 5174 EDB (Laboratoire Évolution & Diversité Biologique), 118 route de Narbonne, F-31062 Toulouse, France.
Annals of botany
|June 22, 2024
概括
橄家族 (Oleaceae) 起源于8600万年前,其东西欧亚断层是由青海-西藏高原的升起和气候解释的. 需要对兰花和莉花进行进一步的研究.
科学领域:
- 植物系统学 植物系统学
- 人类遗传学 是一个学科.
- 生物地理学是生物地理学.
背景情况:
- 橄家族 (Oleaceae) 在东亚和西亚/欧洲之间表现出独特的分离分布.
- 之前的系统研究提供了一个机会来更新这个家族的族谱,并调查它的历史生物地理.
研究的目的:
- 为了重建和约会Oleaceae家族的骨干系谱.
- 调查历史的生物地理和因素,有助于Oleaceae.内部的分离分布.
- 测试解释东西欧亚断层的假设,包括青海-西藏高原升起和气候变化.
主要方法:
- 使用最大概率和贝叶斯法,用36个塑体和核标记物进行基系重建.
- 采集了298个物种的样本,代表了迄今为止Oleaceae最大的遗传学研究.
- 评估四种对立的假设,对离散分布进行评估.
主要成果:
- 重建了Oleaceae的一棵新的,已过时的家族遗传树,发现大多数部落和子部落都是单一的.
- 青海-西藏高原升起-气候假说被认为是东西欧亚断层的主要驱动因素.
- 叶科的起源可以追溯到大约8600万年前,热带亚洲被确定为物种分散的主要来源.
结论:
- 这项研究提供了一个强大的全家族类遗传,突出了稳定的关系,并确定了Chionanthus.
- 建议对低样本属,如南和莉花等进行进一步的系统研究.
- 增强的物种采样将在不同的尺度和地质时间中完善生物地理分析.
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