Does the Arcto-Tertiary biogeographic hypothesis explain the disjunct distribution of Northern Hemisphere herbaceous plants? The case of Meehania (Lamiaceae).
Does the Arcto-Tertiary biogeographic hypothesis explain the disjunct distribution of Northern Hemisphere herbaceous plants? The case of Meehania (Lamiaceae).
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DOI：
10.1371/journal.pone.0117171
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Sun H
中科院分区：
文献类型：
--
作者：
Deng T;Nie ZL;Drew BT;Volis S;Kim C;Xiang CL;Zhang JW;Wang YH;Sun H
尽管取得了相当大的进展，但关于北半球木本和草本植物区系进化的许多细节，包括迁移路线的时间、方向和相对重要性，仍然知之甚少。卷叶草属（卷叶草科）由一年生或多年生草本植物7种和5个亚种组成，是已知的少数在东亚和北美东部之间完全分离分布的卷叶草科属之一。本文分析了米哈尼亚的系统发育和生物地理历史，探讨了早第三纪生物地理假说和两种可能的迁徙路线如何解释北半球草本植物的不间断分布。基于5个质体序列（rbcL、rps16、rpl32-trnH、psbA-trnH和trnL-F）和2个核基因区（ITS和ETS），采用简约法和贝叶斯推理进行系统发育分析。发散时间和生物地理推断分别采用BEAST和S-DIVA中实现的贝叶斯方法进行。对已知的12个米哈尼亚分类群中的11个进行分析，发现叶绿体与核树不一致，特别是在Glechoma和米哈尼亚cordata的位置，可能表明在中新世晚期发生了叶绿体捕获的异源多倍体。基于nrDNA， Meehania是单系的，北美物种M. cordata是包含东亚物种的分支的姐妹。根据贝叶斯松弛时钟方法对合并核数据的分析，北美洲和东亚种之间的分化时间约为9.81 Mya。生物地理分析表明，早第三纪植物区系在研究分类群分布中起主要作用，起源于东北亚的米哈尼亚。我们的研究结果表明，米哈尼亚的起源可能在早第三纪至第三纪之间，其目前的分布很可能是中新世中期气候振荡期间种群的迁移和向南迁移的结果，随后在中新世晚期通过白令陆桥迁移到北美东部。
Despite considerable progress, many details regarding the evolution of the Arcto-Tertiary flora, including the timing, direction, and relative importance of migration routes in the evolution of woody and herbaceous taxa of the Northern Hemisphere, remain poorly understood. Meehania (Lamiaceae) comprises seven species and five subspecies of annual or perennial herbs, and is one of the few Lamiaceae genera known to have an exclusively disjunct distribution between eastern Asia and eastern North America. We analyzed the phylogeny and biogeographical history of Meehania to explore how the Arcto-Tertiary biogeographic hypothesis and two possible migration routes explain the disjunct distribution of Northern Hemisphere herbaceous plants. Parsimony and Bayesian inference were used for phylogenetic analyses based on five plastid sequences (rbcL, rps16, rpl32-trnH, psbA-trnH, and trnL-F) and two nuclear (ITS and ETS) gene regions. Divergence times and biogeographic inferences were performed using Bayesian methods as implemented in BEAST and S-DIVA, respectively. Analyses including 11 of the 12 known Meehania taxa revealed incongruence between the chloroplast and nuclear trees, particularly in the positions of Glechoma and Meehania cordata, possibly indicating allopolyploidy with chloroplast capture in the late Miocene. Based on nrDNA, Meehania is monophyletic, and the North American species M. cordata is sister to a clade containing the eastern Asian species. The divergence time between the North American M. cordata and the eastern Asian species occurred about 9.81 Mya according to the Bayesian relaxed clock methods applied to the combined nuclear data. Biogeographic analyses suggest a primary role of the Arcto-Tertiary flora in the study taxa distribution, with a northeast Asian origin of Meehania. Our results suggest an Arcto-Tertiary origin of Meehania, with its present distribution most probably being a result of vicariance and southward migrations of populations during climatic oscillations in the middle Miocene with subsequent migration into eastern North America via the Bering land bridge in the late Miocene.
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DOI：
10.1111/j.1096-0031.1996.tb00196.x
发表时间：
1994-09-01
期刊：
CLADISTICS-THE INTERNATIONAL JOURNAL OF THE WILLI HENNIG SOCIETY
影响因子：
--
作者：
FARRIS, JS;KALLERSJO, M;BULT, C
通讯作者：
BULT, C
影响因子：
3.4
作者：
Albaladejo, RG;Aguilar, JF;Feliner, GN
通讯作者：
Feliner, GN
影响因子：
9.8
作者：
Drummond AJ;Ho SY;Phillips MJ;Rambaut A
通讯作者：
Rambaut A
影响因子：
1
作者：
Edwards, CE;Soltis, DE;Soltis, PS
通讯作者：
Soltis, PS
DOI：
10.1098/rstb.2004.1538
发表时间：
2004-10-29
影响因子：
6.3
作者：
Donoghue, MJ;Smith, SA
通讯作者：
Smith, SA