Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Population genomics reveal deep divergence and strong geographical structure in gentians in the Hengduan Mountains | |
Fu, PC; Sun, SS; Hollingsworth, PM; Chen, SL; Favre, A; Twyford, AD | |
2022 | |
发表期刊 | FRONTIERS IN PLANT SCIENCE |
卷号 | 13 |
摘要 | Understanding the evolutionary and ecological processes driving population differentiation and speciation can provide critical insights into the formation of biodiversity. Here, we examine the link between population genetic processes and biogeographic history underlying the generation of diversity in the Hengduan Mountains (HM), a region harboring a rich and dynamic flora. We used restriction site-associated DNA sequencing to generate 1,907 single-nucleotide polymorphisms (SNPs) and four-kb of plastid sequence in species of the Gentiana hexaphylla complex (Gentianaceae). We performed genetic clustering with spatial and non-spatial models, phylogenetic reconstructions, and ancestral range estimation, with the aim of addressing the processes influencing diversification of G. hexaphylla in the HM. We find the G. hexaphylla complex is characterized by geographic genetic structure with clusters corresponding to the South, North and the central HM. Phylogenetic reconstruction and pairwise F-ST analyses showed deep differentiation between Southern and Northern populations in the HM. The population in Mount Taibai exhibited the highest genetic similarity to the North HM. Ancestral range estimation indicated that the G. hexaphylla complex originated in the central HM and then diverged in the Pliocene and the Early Pleistocene, before dispersing widely, resulting in the current distinct lineages. Overall, we found deep genomic differentiation in the G. hexaphylla complex corresponds to geographic barriers to dispersal in the HM and highlights a critical role of the uplift of the Daxue Mountains and subsequent climatic fluctuations underlying diversification. The colonization of G. hexaphylla in the Mount Taibai region suggests directional dispersal between the alpine flora of the Qinling Mountains and the HM. |
收录类别 | SCIE |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/61130 |
专题 | 中国科学院西北高原生物研究所 |
推荐引用方式 GB/T 7714 | Fu, PC,Sun, SS,Hollingsworth, PM,et al. Population genomics reveal deep divergence and strong geographical structure in gentians in the Hengduan Mountains[J]. FRONTIERS IN PLANT SCIENCE,2022,13. |
APA | Fu, PC,Sun, SS,Hollingsworth, PM,Chen, SL,Favre, A,&Twyford, AD.(2022).Population genomics reveal deep divergence and strong geographical structure in gentians in the Hengduan Mountains.FRONTIERS IN PLANT SCIENCE,13. |
MLA | Fu, PC,et al."Population genomics reveal deep divergence and strong geographical structure in gentians in the Hengduan Mountains".FRONTIERS IN PLANT SCIENCE 13(2022). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论