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菲利潘奇拉莫萨的多个基因型表明,它被多次引入美洲

Adam C Schneider¹

¹Department of Biology, University of Wisconsin, La Crosse, La Crosse, WI, USA.

American journal of botany

|January 7, 2025

概括

遗传分析揭示了寄生植物Phelipanche ramosa在美洲的多次引入. 不同的Phelipanche种群显示出不同的遗传组,这表明引入后的基因流量有限.

科学领域:

植物生物学植物生物学
遗传学是一个遗传学.
进化生物学是进化的生物学.

背景情况:

菲利潘奇拉莫萨 (Phelipanche ramosa) 是北美一个具有经济意义的寄生植物.
新世界引入的Phelipanche种群的遗传多样性在很大程度上是未知的.
形态和生态变异表明Phelipanche nana. 的潜在存在.

研究的目的:

为了研究北美和南美的偶然的Phelipanche种群的遗传组成.
确定Phelipanche种群与密切相关的P. nana.之间的关系.
了解菲利潘奇在美洲的引入历史和遗传结构.

主要方法:

基因组皮被用来分析遗传物质.
来自北美和南美的30个Phelipanche种群的样本被采集.
来自黎巴嫩的Phelipanche nana参考种群被纳入用于比较.

主要成果:

遗传学分析在采样的Phelipanche种群中确定了四个不同的遗传组.
在塑体和核核糖核酶体DNA (nrDNA) 数据之间观察到冲突的遗传信号.
来自智利的种群在遗传上与P. nana相似,而弗吉尼亚的样本显示出混合的遗传信号. 其他群体与种植植物或路边杂草有关.

结论:

这些发现支持了菲利潘奇从欧亚到美洲的多个独立引入的假设.
不同的遗传群体表现出有限的基因流动,突出地缘和生态凝聚力.
现有的P. ramosa和P. nana的物种概念与观察到的遗传分组不完全一致,需要对农业环境进行区域威胁评估.

关键词:

这种植物是Orobanchaceae.菲利潘切 (Phelipanche) 的祖母,也就是大大的祖母.菲利潘奇拉莫萨 (Phelipanche ramosa) 是一个大鱼.扫纸是一种扫纸.生态类型生态类型基因组脱皮是指基因组脱皮.东道主比赛的比赛.寄生植物寄生植物植物地理学植物地理学杂草杂草是一种杂草.

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