Resolving the phylogenetic relationships and evolutionary history of the East Asian endemic genus Rodgersia (Saxifragaceae) using multilocus data
Ma, Xiangguang; Sun, Wenguang; Zhu, Weidong; Sun, Hang
2017-04-01
发表期刊PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS
ISSN1433-8319
卷号25期号:25页码:20-28
摘要The East Asian endemic genus Rodgersia comprises five species and several variants. These species exhibit variation in ploidy level and a fragmented distribution across the whole of East Asia. In order to explain their present distribution pattern under a robust phylogeny, we employed multiple copy nuclear genes ( ITS and ETS), cpDNA (rpl32-trnL, trnV-ndhC, ndhF-rpl32) and a low copy nuclear gene ( GBSSI) to reconstruct the species' relationships within Rodgersia. Identification of ploidy levels was also carried out for most of samples. The early-diverging positions of R. nepalensis and R. podophylla were confirmed in different gene trees. Much topological incongruence among gene trees was found in the shallower branches, which comprised the species of central-southwest China. Both incomplete lineage sorting and ancient introgression may be responsible for the incongruent pattern observed. Ancient introgressions may have occurred between diploid species and the diploid progenitors of tetraploid species in different areas of southwest China. Rodgersia probably originated in Northeast Asia during the Pliocene. This genus is a rare example in which two early-diverging species occur at opposite ends of the distribution area, likely resulting from successive vicariance events. Unlike many vicariance events shaped simply by forest fragmentation during the Pleistocene, the contemporary biogeographic pattern of Rodgersia is more the result of rapid sympatric evolution (reticulate events and polyploidization) of the taxa in the central area. (C) 2017 Elsevier GmbH. All rights reserved.
关键词Allopatric Speciation Ancient Introgression Biogeographic Pattern East Asia Vicariance
DOI10.1016/j.ppees.2016.12.005
收录类别SCI
语种英语
WOS记录号WOS:000412416000002
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/33803
专题中国科学院东亚植物多样性与生物地理学重点实验室
作者单位Chinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
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Ma, Xiangguang,Sun, Wenguang,Zhu, Weidong,et al. Resolving the phylogenetic relationships and evolutionary history of the East Asian endemic genus Rodgersia (Saxifragaceae) using multilocus data[J]. PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS,2017,25(25):20-28.
APA Ma, Xiangguang,Sun, Wenguang,Zhu, Weidong,&Sun, Hang.(2017).Resolving the phylogenetic relationships and evolutionary history of the East Asian endemic genus Rodgersia (Saxifragaceae) using multilocus data.PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS,25(25),20-28.
MLA Ma, Xiangguang,et al."Resolving the phylogenetic relationships and evolutionary history of the East Asian endemic genus Rodgersia (Saxifragaceae) using multilocus data".PERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS 25.25(2017):20-28.
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