草本馆样本的测序可以准确地测定Xanthomonas citri pv. 的年代. 城市的多样化历史
Paola E Campos1,2, Olivier Pruvost1, Karine Boyer1
1CIRAD, UMR PVBMT, F-97410, St Pierre, La Réunion, France.
Nature communications
|July 20, 2023
概括
来自草药馆标本的古代DNA揭示了细菌植物病原体Xanthomonas citri pv. 树 (Xci) 起源于南亚,大约在11500年前. 这种病原体在13世纪多样化,然后通过类贸易在全球传播.
科学领域:
- 基因组学就是基因组学.
- 植物地理学 植物地理学
- 植物病理学 植物病理学
背景情况:
- 草药馆的藏品提供了宝贵的保存DNA,用于研究病原体进化.
- 比较基因组学和植物地理学可以阐明植物病原体的起源和历史.
研究的目的:
- 为了重建Xanthomonas citri pv. 的历史基因组. 来自草本馆标本的 (Xci).
- 研究Xci.的遗传关系,遗传内容和进化历史.
主要方法:
- 从受感染的类草本园样本中重建了13个历史的Xci基因组.
- 使用损伤模式验证古代DNA的真实性.
- 历史基因组与现代Xci基因组的比较.
主要成果:
- 大约11500年前,Xci起源于南亚.
- 病原体的多样化发生在13世纪初.
- 全球传播可能是由人类驱动的贸易和农业促进的.
结论:
- 植物病原体的DNA对于了解植物病原体的进化史至关重要.
- Xci的起源和传播与古代的气候事件和人类的农业实践有关.
- 该研究提供了对一个重要的作物病原体的长期演变和分散的见解.
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