Comparative phylogeography of the Smilax hispida group (Smilacaceae) in eastern Asia and North America - Implications for allopatric speciation, causes of diversity disparity, and origins of temperate elements in Mexico

被引：29

作者：

Zhao, Yunpeng ^{[1
]}

Qi, Zhechen ^{[1
]}

Ma, Weiwei ^{[1
]}

Dai, Qiongyan ^{[1
]}

Li, Pan ^{[1
]}

Cameron, Kenneth M. ^{[2
]}

Lee, Joongku ^{[3
]}

Xiang, Qiu-Yun ^{[4
]}

Fu, Chengxin ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Life Sci, Key Lab Conservat Biol Endangered Wildlife, Minist Educ, Hangzhou 310058, Zhejiang, Peoples R China

[2] Univ Wisconsin, Dept Bot, Madison, WI 53706 USA

[3] Korea Res Inst Biosci & Biotechnol, Taejon 305806, South Korea

[4] N Carolina State Univ, Dept Plant Biol, Raleigh, NC 27695 USA

来源：

MOLECULAR PHYLOGENETICS AND EVOLUTION | 2013年 / 68卷 / 02期

基金：

美国国家科学基金会;

关键词：

Comparative phylogeography; Smilax hispida group; Eastern Asian-North American disjunction; Species delineation; Diversification rate; Origin of Mexican temperate plants; NONCODING CHLOROPLAST DNA; MOLECULAR PHYLOGEOGRAPHY; FLORISTIC DISJUNCTION; EVOLUTIONARY HISTORY; QUATERNARY CLIMATE; GENE TREES; BIOGEOGRAPHY; PHYLOGENY; PLANT; SEQUENCES;

D O I：

10.1016/j.ympev.2013.03.025

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The Smilax hispida group (Smilacaceae) exhibits a discontinuous distribution in eastern Asia, eastern and western United States, and Mexico. A broad scale phylogeographic analysis was conducted for this group to evaluate the hypotheses of accelerated allopatric divergence in eastern Asia and a northern origin of the temperate elements in Mexico. Phylogeny was inferred using seven plastid and nuclear DNA sequences. Species delineation was assessed using genealogical sorting indices (GSI). Lineage divergence time, haplotype diversification rates, and ancestral distributions were estimated using Bayesian methods. Phylogeographic patterns in eastern Asia and North America were compared by analyzing 539 individuals from 64 populations to assess allopatric diversification. Results strongly supported delineation of six allopatric species, the origin of this group from a Mexican ancestor around 11.42 mya, and Mexican origins of the temperate species in Mexico. Significant geographic structure of haplotypes was found in eastern Asia, and greater haplotype diversification rate was observed for the North American lineage. Our data support allopatric speciation in eastern Asia but do not find evidence of an elevated diversification rate. Greater species diversity of the study system in eastern Asia may be due to a longer evolutionary history. Our results do not support northern origins of the Mexican temperate species. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：300 / 311

页数：12