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一个棘手的故事:Cirsium (Compositae) 的起源和多样化

Lucía D Moreyra¹, Alfonso Susanna¹, Juan Antonio Calleja²

¹Botanic Institute of Barcelona (IBB), CSIC-CMCNB, Pg. Migdia, s.n., 08038 Barcelona, Spain.

Molecular phylogenetics and evolution

|January 12, 2025

概括

卡尔杜斯 - 锡植物群起源于西古北极,并在全球分散,锡在北半球显著多样化. 这项研究揭示了驱动其演变的关键分散事件和辐射.

科学领域:

植物学和植物科学植物学和植物科学
进化生物学进化生物学
生物地理学是生物地理学.

背景情况:

卡尔杜斯-Cirsium组,包括600多个物种,是一个多样化的植物系跨霍拉克特地区.
进化和生物地理史,特别是Cirsium属内的进化和生物地理史,尚未得到充分理解.

研究的目的:

调查卡尔杜斯-西尔群的生物地理历史和多样化模式.
通过使用全面的分子数据集,专注于Cirsium属的进化轨迹.

主要方法:

从目标捕获测序中利用350个核位点进行的家族基因组学分析.
对299个样本进行分析,这些样本代表了Carduus-Cirsium群中的251个种类.
祖先范围重建和多样化率分析.

主要成果:

卡尔杜斯 - 团起源于西巴列北极的中新世纪晚期.
向非洲分散导致Afrocarduus和Afrocirsium属;Cirsium亚属从大约720万-730万年前开始在西古北极地区多样化.
随着地理隔离和生态专业化的驱动,在普略纪和普纪期间,对西南亚,北美和日本的多样化和分散程度增加.

结论:

这项研究阐明了Carduus-Cirsium群的复杂生物地理历史和多样化.
遗传学数据支持多个分散事件和辐射,特别是在Cirsium内部,这有助于其当前的分布和分类学复杂性.

关键词:

生物地理学是生物地理学.卡尔杜内纳是什么意思在Cirsium中,我们可以看到Cirsium.多样化的多样化目标丰富的目标丰富纳税学是一种分类学.

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