Molecular phylogenetics and biogeography of the mint tribe Elsholtzieae (Nepetoideae, Lamiaceae), with an emphasis on its diversification in East Asia.
Molecular phylogenetics and biogeography of the mint tribe Elsholtzieae (Nepetoideae, Lamiaceae), with an emphasis on its diversification in East Asia.
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薄荷族Elsholtzieae（荆芥亚科、唇形科）的分子系统发育和生物地理学，重点关注其在东亚的多样化
DOI：
10.1038/s41598-017-02157-6
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发表时间：
2017-05-17
影响因子：
4.6
通讯作者：
Qiu YX
中科院分区：
文献类型：
--
作者：
Li P;Qi ZC;Liu LX;Ohi-Toma T;Lee J;Hsieh TH;Fu CX;Cameron KM;Qiu YX
香薷属及其近缘属如紫苏属（Collinsonia和Perilla）是唇形科香薷族（Elsholtzieae）的一个重要的生态和经济植物类群，约有71种，大多数分布于东亚和东南亚，少数分布于北美。它们的起源和历史地理学导致了一个遥远的洲际分离，人们对此知之甚少。在这里，我们使用两个核（ETS，ITS）和五个叶绿体（rbcL，matK，trnL-F，ycf 1，ycf 1-rps 15）片段重建的进化史，地理历史，和模式的多元化香薷族。香薷族是单系的，分为五个分支。木本香薷种嵌套在草本种中，并被推断为从草本祖先进化而来。分子年代测定表明，五个主要的分支是在始新世时期建立的，但大多数现代多样性直到中新世才开始。新大陆Collinsonia和旧大陆Mosla-Keiskea-Perillaclade的分歧可追溯到中新世中期。祖先地区的重建表明，该部落起源于东亚，然后分散到东南亚和北美。总体而言，我们的研究结果强调了青藏高原（QTP）的隆升和中中新世以来的气候变化在促进香薷族物种多样性方面的重要作用。
Elsholtziaand its allied genera such asCollinsoniaandPerilla(tribe Elsholtzieae, Lamiaceae) are an ecologically and economically important plant group consisting of ~71 species, with most species distributed in East and Southeast Asia, and several species in North America. Their phylogeny and historical biogeography resulting in a distant intercontinental disjunction are poorly understood. Here we use two nuclear (ETS, ITS) and five chloroplast (rbcL,matK,trnL-F,ycf1,ycf1-rps15) fragments to reconstruct the phylogeny, biogeographic history, and patterns of diversification of Elsholtzieae. The tribe Elsholtzieae is monophyletic and divided into five clades. The woodyElsholtziaspecies are nested within herbaceous ones and are inferred to have evolved from herbaceous ancestors. Molecular dating shows that the five major clades were established during the Eocene period, but most of the modern diversity did not originate until the Miocene. The divergence between the New WorldCollinsoniaand the Old WorldMosla-Keiskea-Perillaclade was dated to the mid-Miocene. Ancestral area reconstructions suggest that the tribe originated in East Asia, and then dispersed to Southeast Asia and North America. Overall, our findings highlight the important roles of the uplifts of the Qinghai-Tibetan Plateau (QTP) and climate changes from Middle Miocene onwards in promoting species diversification of Elsholtzieae.