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Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China

The genus Dendrobium was used as a case study to elucidate the evolutionary history of Orchidaceae in the Sino-Japanese Floristic Region (SJFR) and Southeast Asia region. These evolutionary histories remain largely unknown, including the temporal and spatial distribution of the evolutionary events....

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Autores principales: Hou, Beiwei, Luo, Jing, Zhang, Yusi, Niu, Zhitao, Xue, Qingyun, Ding, Xiaoyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5337965/
https://www.ncbi.nlm.nih.gov/pubmed/28262789
http://dx.doi.org/10.1038/srep43525
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author Hou, Beiwei
Luo, Jing
Zhang, Yusi
Niu, Zhitao
Xue, Qingyun
Ding, Xiaoyu
author_facet Hou, Beiwei
Luo, Jing
Zhang, Yusi
Niu, Zhitao
Xue, Qingyun
Ding, Xiaoyu
author_sort Hou, Beiwei
collection PubMed
description The genus Dendrobium was used as a case study to elucidate the evolutionary history of Orchidaceae in the Sino-Japanese Floristic Region (SJFR) and Southeast Asia region. These evolutionary histories remain largely unknown, including the temporal and spatial distribution of the evolutionary events. The present study used nuclear and plastid DNA to determine the phylogeography of Dendrobium officinale and four closely related taxa. Plastid DNA haplotype and nuclear data were shown to be discordant, suggesting reticulate evolution drove the species’ diversification. Rapid radiation and genetic drift appeared to drive the evolution of D. tosaense and D. flexicaule, whereas introgression or hybridization might have been involved in the evolution of D. scoriarum and D. shixingense. The phylogeographical structure of D. officinale revealed that core natural distribution regions might have served as its glacial refuges. In recent years, human disturbances caused its artificial migration and population extinction. The five taxa may have originated from the Nanling Mountains and the Yungui Plateau and then migrated northward or eastward. After the initial iteration expansion, D. officinale populations appeared to experience the regional evolutionary patterns in different regions and follow the sequential or rapid decline in gene exchange.
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spelling pubmed-53379652017-03-08 Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China Hou, Beiwei Luo, Jing Zhang, Yusi Niu, Zhitao Xue, Qingyun Ding, Xiaoyu Sci Rep Article The genus Dendrobium was used as a case study to elucidate the evolutionary history of Orchidaceae in the Sino-Japanese Floristic Region (SJFR) and Southeast Asia region. These evolutionary histories remain largely unknown, including the temporal and spatial distribution of the evolutionary events. The present study used nuclear and plastid DNA to determine the phylogeography of Dendrobium officinale and four closely related taxa. Plastid DNA haplotype and nuclear data were shown to be discordant, suggesting reticulate evolution drove the species’ diversification. Rapid radiation and genetic drift appeared to drive the evolution of D. tosaense and D. flexicaule, whereas introgression or hybridization might have been involved in the evolution of D. scoriarum and D. shixingense. The phylogeographical structure of D. officinale revealed that core natural distribution regions might have served as its glacial refuges. In recent years, human disturbances caused its artificial migration and population extinction. The five taxa may have originated from the Nanling Mountains and the Yungui Plateau and then migrated northward or eastward. After the initial iteration expansion, D. officinale populations appeared to experience the regional evolutionary patterns in different regions and follow the sequential or rapid decline in gene exchange. Nature Publishing Group 2017-03-06 /pmc/articles/PMC5337965/ /pubmed/28262789 http://dx.doi.org/10.1038/srep43525 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Hou, Beiwei
Luo, Jing
Zhang, Yusi
Niu, Zhitao
Xue, Qingyun
Ding, Xiaoyu
Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title_full Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title_fullStr Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title_full_unstemmed Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title_short Iteration expansion and regional evolution: phylogeography of Dendrobium officinale and four related taxa in southern China
title_sort iteration expansion and regional evolution: phylogeography of dendrobium officinale and four related taxa in southern china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5337965/
https://www.ncbi.nlm.nih.gov/pubmed/28262789
http://dx.doi.org/10.1038/srep43525
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