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形态学和遗传学证据表明,在本地和自然化的薄荷品种之间存在基因流动

Jill K Olofsson¹, Torbjörn Tyler², Luke T Dunning³

¹Section for GeoGenetics, Globe Institute, University of Copenhagen, Øster Voldgade 5-7, Copenhagen, DK-1350, Denmark.

American journal of botany

|February 9, 2024

概括

在它们的自然范围之外种植薄荷种类会导致杂交和基因流动. 这可以创造新的品种,但如果生殖障碍较弱,也有可能失去自然生物多样性.

科学领域:

植物学和植物遗传学
进化生物学进化生物学
保护生物学保护生物学

背景情况:

人类的栽培和植物物种的引入超出它们的原生范围,可以促进物种间的相互作用.
地理孤立的种群之间的杂交会导致不可预测的进化结果和生物多样性的变化.

研究的目的:

为了研究种植薄荷品种中跨物种基因流的表型和基因组后果.
评估杂交和多化对孟塔遗传混合和生物多样性的影响.

主要方法:

对155个跨越三种mentha物种的草本标本进行了形态分析.
93个薄荷样本的全基因组测序.
人口和族系基因组分析与形态数据相结合.

主要成果:

多体 Mentha spicata,可能是种植的产物,表现出改变了三体形态,可能是由于人类的选择.
在不同的孟塔物种之间发现了遗传混合的证据,包括全聚类物种,这表明不完整的繁殖障碍.
尽管基因流动,培养三形态的遗传变异仍然在物种内分离.

结论:

杂交,多化和人类选择可以增加物种丰富性,但也可能导致遗传混合和生物多样性丧失.
孟塔物种的不完整的生殖障碍促进了基因流动,可能会影响自然遗传多样性.
了解这些过程对于在人类引入和种植的情况下管理植物生物多样性至关重要.

关键词:

孟塔 (Mentha) 是一种薄荷.添加剂混合物添加剂它是全聚多多多多多的.混合化混合化混合化这是一份印证 (indumentum).这是一个内进的进攻.三合体是三合体的

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