关于Palaquium和Isonandreae (Sapotaceae) 部落的新型遗传学和生物地理见解
A Phang1, M A Niissalo2, L Herrera-Alsina3
1Royal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh EH3 5LR, United Kingdom; Singapore Botanic Gardens, National Parks Board, 1 Cluny Road, 259569 Singapore, Singapore; School of Biological Sciences, University of Aberdeen, Aberdeen AB24 3UU, United Kingdom.
Molecular phylogenetics and evolution
|July 1, 2025
概括
遗传学分析显示,帕拉奎姆 (Palaquium) 属的sapodilla不是单一的,奥兰德拉 (Aulandra) 嵌入其中. 生物地理学重建表明,多样化的时间较早,以及东南亚的北方热带维卡里安特签名.
科学领域:
- 植物学 植物学
- 进化生物学 进化生物学
- 人类遗传学 是一个学科.
背景情况:
- 帕拉基乌姆 (Palaquium) 是萨波塔科 (Sapotaceae) 家族中最大的属,其进化关系解决得不好.
- 以前的研究缺乏全面的抽样和遗传位置,阻碍了对这种以马来西亚为中心的属的分类学和进化理解.
研究的目的:
- 通过使用广泛的DNA序列数据来解决Palaquium和Isonandreae部落内的遗传学关系.
- 重建帕拉奎姆和相关品种的生物地理历史和多样化时间.
主要方法:
- 使用高通量,捕获目标的DNA序列数据.
- 遗传学分析包括大约80%的公认的Palaquium物种和Isonandreae部落的所有属.
- 分散-灭绝-克拉多生成和新的建模框架被应用于生物地理重建.
主要成果:
- 据证实,Palaquium是非单一的,有一个与Isonandra和Aulandra相关的亚洲分类在Palaquium内嵌.
- 生物地理重建支持马来西亚群岛的西向东殖民模式.
- Palaquium和Isonandreae的多元化时间比以前估计的要早,这表明一个北方热带的替代品签名.
结论:
- 目前的帕拉基乌姆地区需要修改.
- 这些发现为东南亚萨波塔属植物的进化历史和生物地理提供了新的见解.
- 重建的祖先范围与伊欧纪化石记录保持一致,增强了对桑达兰的古地理学的理解.
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