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
Source PublicationPERSPECTIVES IN PLANT ECOLOGY EVOLUTION AND SYSTEMATICS
ISSN1433-8319
Volume25Issue:25Pages:20-28
Abstract

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.

KeywordAllopatric Speciation Ancient Introgression Biogeographic Pattern East Asia Vicariance
DOI10.1016/j.ppees.2016.12.005
Indexed BySCI
Language英语
WOS IDWOS:000412416000002
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/33803
Collection中国科学院东亚植物多样性与生物地理学重点实验室
AffiliationChinese Acad Sci, Kunming Inst Bot, Key Lab Plant Divers & Biogeog East Asia, 132 Lanhei Rd, Kunming 650201, Yunnan, Peoples R China
Recommended Citation
GB/T 7714
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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