A timeframe for mint evolution: towards a better understanding of trait evolution and historical biogeography in Lamiaceae
A timeframe for mint evolution: towards a better understanding of trait evolution and historical biogeography in Lamiaceae
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薄荷进化的时间表：更好地理解唇形科性状进化和历史生物地理学
DOI：
10.1093/botlinnean/boab104
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发表时间：
2022
影响因子：
2.4
通讯作者：
Drew, Bryan T
中科院分区：
文献类型：
--
作者：
Rose, Jeffrey P;Xiang, Chun-Lei;Sytsma, Kenneth J;Drew, Bryan T
唇形科是开花植物中最大和最重要的经济科之一。尽管有针对性的研究亚支内的关系，更高层次的关系已经研究不足。此外，该科大部分物种的草本习性导致化石记录不佳，并阻碍了对分歧时间的估计。使用一个新的数据集的5个质体位点的唇形科代表所有亚科和几乎所有的部落的178名成员，我们澄清主要的infrafamilial关系，并提出了一个强大的分歧时间。我们使用这个系统发育假说作为一个平台，以测试以前的假设，在家庭中的主要性状的历史地理和进化。我们确认了亚科的位置，显示持续的不确定性，在亚科筋骨草亚科和豆腐柴亚科的位置，并强调与最近的核数据结果的极端不一致。唇形科起源于晚白垩世，是一种木质植物，有小坚果果实和四个雄蕊，可能产于东南亚。大多数亚科在始新世分化，也许是气候变冷的促进。我们的研究结果提供了一个有价值的一套Lamiaceae的二级日期，并强调需要集中研究的亚科Callispoideae和Viticoideae。我们的研究结果还提供了几个假设性状或范围依赖的多样化。
Lamiaceae are one of the largest and most economically important families of flowering plants. Despite focused study on relationships within subclades, higher-level relationships have been under-studied. Moreover, the herbaceous habit of much of the family has resulted in a poor fossil record and has hampered estimates of divergence times. Using a new dataset of five plastid loci from 178 members of Lamiaceae representing all subfamilies and nearly all tribes, we clarify major infrafamilial relationships and present a robust set of divergence times. We use this phylogenetic hypothesis as a platform to test previous hypotheses regarding the historical biogeography and evolution of major traits in the family. We confirm the placement of subfamily Nepetoideae, show continued uncertainty in the placement of subfamilies Ajugoideae and Premnoideae and highlight extreme discordance with recent results from nuclear data. Lamiaceae originated during the Late Cretaceous as woody plants with nutlet fruits and four stamens, probably in South-East Asia. Most subfamilies diverged during the Eocene, perhaps facilitated by climatic cooling. Our results provide a valuable set of secondary dates for Lamiaceae and highlight the need for focused study of subfamilies Callicarpoideae and Viticoideae. Our results also provide several hypotheses regarding trait or range-dependent diversification.