Open AccessPhylogeography of two closely related species of Allium endemic to East Asia: Population evolution in response to climate oscillations
Author(s) -
Yang Jingtian,
Zhou Songdong,
Huang Deqing,
He Xingjin
Publication year - 2018
Publication title -
ecology and evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.17
H-Index - 63
ISSN - 2045-7758
DOI - 10.1002/ece3.4338
Subject(s) - phylogeography , biology , interspecific competition , intraspecific competition , population , range (aeronautics) , ecology , glacial period , endemism , evolutionary biology , phylogenetics , paleontology , demography , materials science , sociology , gene , composite material , biochemistry
This study investigated the effects of climate oscillations on the evolution of two closely related Allium species, A. neriniflorum and A. tubiflorum . We sequenced three cp DNA (cp DNA ) fragments ( rps 16, rpl 32‐ trn L, and trn D‐ trn T, together approximately 2,500 bp in length) of two closely related Allium species, with samples from 367 individuals in 47 populations distributed across the total range of these species. The interspecific and intraspecific divergence times of the two species were in the Quaternary glaciation. The population divergence was high for the cp DNA variation, suggesting a significant phylogeographic structure ( N ST = 0.844, G ST = 0.798, p < 0.05). Remarkable ecological differentiation was also revealed by Niche models and statistical analyses. Our results suggest the speciation event of the two species was triggered by violent climatic changes during the Quaternary glaciation.