A preliminary species-level phylogeny of the alpine ginger Roscoea： Implications for speciation

Speciation, the evolutionary process forming new species, is a key mode generating biodiversity on the Earth. In this study, we produced a species-level phylogeny of Roscoea using one nuclear ribosomal and two chloroplast DNA fragments based on Bayesian inference and maximum likelihood. We then expl...

Full description

Saved in:
Bibliographic Details
Published in:Journal of systematics and evolution : JSE 2017-05, Vol.55 (3), p.215-224
Main Authors: Zhao, Jian‐Li, Zhong, Jinshun, Fan, Yong‐Li, Xia, Yong‐Mei, Li, Qing‐Jun
Format: Article
Language:English
Subjects:
Bayesian analysis
Biodiversity
biodiversity hotspots
Biological evolution
budding speciation
Chloroplast DNA
Comparative studies
Deoxyribonucleic acid
DNA
Fragments
Ginger
hybridization
Mountains
New species
phylogenetics
Phylogeny
Roscoea
Speciation
Statistical inference
亲缘关系
品种
形态
核DNA
物种形成
生物多样性
象牙参
高山
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Speciation, the evolutionary process forming new species, is a key mode generating biodiversity on the Earth. In this study, we produced a species-level phylogeny of Roscoea using one nuclear ribosomal and two chloroplast DNA fragments based on Bayesian inference and maximum likelihood. We then explored the possible speciation processes using the species-level phylogeny and the heterozygous sites in the nuclear DNA. The incongruence between nuclear and chloroplast phylogenies, and several heterozygous sites in the nuclear DNA, suggested that R. auriculata might have a hybrid origin with R. purpurea and R. alpina being two possible parental progenitors; however, one alternative possibility through incomplete lineage sorting cannot be ruled out. In addition, R. kunmingensis likely originated from R. tibetica Batalin through the process of ＂budding speciation＂. These results provided a valuable framework to draw testable hypotheses for future in-depth comparative studies to further our understanding of the underpinning speciation and adaptation mechanisms that contribute to ultrahigh biodiversity in the Himalayas and the Hengduan Mountains.
ISSN:1674-4918
1759-6831
DOI:10.1111/jse.12247