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夏威夷特有薄荷货币厂的全聚聚类起源和多样化

Crystal M Tomlin¹, Sitaram Rajaraman^2,3, Jeanne Theresa Sebesta¹

¹Department of Biological Sciences, University at Buffalo, New York, USA.

Nature communications

|April 10, 2024

概括

夏威夷造币厂起源于北美,其多元化是由多体化和适应岛屿环境驱动的. 基因组研究揭示了对岛屿进化和物种化过程的洞察力.

科学领域:

进化生物学是进化的生物学.
基因组学就是基因组学.
岛屿生物地理学岛屿生物地理学

背景情况:

岛屿系统对于理解进化至关重要,包括血统迁移,多样化和灭绝.
夏威夷群岛拥有大量的植物辐射,例如特有薄荷 (Lamiaceae家族).

研究的目的:

调查夏威夷造币厂的大陆起源和多样化.
探索岛屿生态系统中物种化和适应的基因组基础.

主要方法:

染色体尺度基因组测序Stenogyne calaminthoides. 这是一个很好的方法.
再测序了45个相关物种和109个来自两个Stenogyne物种及其杂交物种的个体.
遗传学分析以推断进化关系并识别多化事件.

主要成果:

夏威夷薄荷属 (Haplostachys,Phyllostegia,Stenogyne) 在Stachys属内嵌.
在Stachys中确定了四个独立的多重合体事件,包括夏威夷造币厂及其北美祖先的一种多重合体事件.
多样化很可能涉及寄生类,分散种群的漂移和局部混合.

结论:

基因组分析揭示了岛屿辐射的进化轨迹.
岛屿链作为研究进化过程的自然实验室,如达尔文的作品所示.

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