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Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA

BACKGROUND: A complex of incipient species with different degrees of morphological or ecological differentiation provides an ideal model for studying species divergence. We examined the phylogeography and the evolutionary history of the Rhododendron pseudochrysanthum s. l. RESULTS: Systematic incons...

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Autores principales: Huang, Chi-Chun, Hung, Kuo-Hsiang, Hwang, Chi-Chuan, Huang, Jao-Ching, Lin, Hung-Du, Wang, Wei-Kuang, Wu, Pei-Yin, Hsu, Tsai-Wen, Chiang, Tzen-Yuh
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3096940/
https://www.ncbi.nlm.nih.gov/pubmed/21501530
http://dx.doi.org/10.1186/1471-2148-11-108
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author Huang, Chi-Chun
Hung, Kuo-Hsiang
Hwang, Chi-Chuan
Huang, Jao-Ching
Lin, Hung-Du
Wang, Wei-Kuang
Wu, Pei-Yin
Hsu, Tsai-Wen
Chiang, Tzen-Yuh
author_facet Huang, Chi-Chun
Hung, Kuo-Hsiang
Hwang, Chi-Chuan
Huang, Jao-Ching
Lin, Hung-Du
Wang, Wei-Kuang
Wu, Pei-Yin
Hsu, Tsai-Wen
Chiang, Tzen-Yuh
author_sort Huang, Chi-Chun
collection PubMed
description BACKGROUND: A complex of incipient species with different degrees of morphological or ecological differentiation provides an ideal model for studying species divergence. We examined the phylogeography and the evolutionary history of the Rhododendron pseudochrysanthum s. l. RESULTS: Systematic inconsistency was detected between gene genealogies of the cpDNA and nrDNA. Rooted at R. hyperythrum and R. formosana, both trees lacked reciprocal monophyly for all members of the complex. For R. pseudochrysanthum s.l., the spatial distribution of the cpDNA had a noteworthy pattern showing high genetic differentiation (F(ST )= 0.56-0.72) between populations in the Yushan Mountain Range and populations of the other mountain ranges. CONCLUSION: Both incomplete lineage sorting and interspecific hybridization/introgression may have contributed to the lack of monophyly among R. hyperythrum, R. formosana and R. pseudochrysanthum s.l. Independent colonizations, plus low capabilities of seed dispersal in current environments, may have resulted in the genetic differentiation between populations of different mountain ranges. At the population level, the populations of Central, and Sheishan Mountains may have undergone postglacial demographic expansion, while populations of the Yushan Mountain Range are likely to have remained stable ever since the colonization. In contrast, the single population of the Alishan Mountain Range with a fixed cpDNA haplotype may have experienced bottleneck/founder's events.
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spelling pubmed-30969402011-05-19 Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA Huang, Chi-Chun Hung, Kuo-Hsiang Hwang, Chi-Chuan Huang, Jao-Ching Lin, Hung-Du Wang, Wei-Kuang Wu, Pei-Yin Hsu, Tsai-Wen Chiang, Tzen-Yuh BMC Evol Biol Research Article BACKGROUND: A complex of incipient species with different degrees of morphological or ecological differentiation provides an ideal model for studying species divergence. We examined the phylogeography and the evolutionary history of the Rhododendron pseudochrysanthum s. l. RESULTS: Systematic inconsistency was detected between gene genealogies of the cpDNA and nrDNA. Rooted at R. hyperythrum and R. formosana, both trees lacked reciprocal monophyly for all members of the complex. For R. pseudochrysanthum s.l., the spatial distribution of the cpDNA had a noteworthy pattern showing high genetic differentiation (F(ST )= 0.56-0.72) between populations in the Yushan Mountain Range and populations of the other mountain ranges. CONCLUSION: Both incomplete lineage sorting and interspecific hybridization/introgression may have contributed to the lack of monophyly among R. hyperythrum, R. formosana and R. pseudochrysanthum s.l. Independent colonizations, plus low capabilities of seed dispersal in current environments, may have resulted in the genetic differentiation between populations of different mountain ranges. At the population level, the populations of Central, and Sheishan Mountains may have undergone postglacial demographic expansion, while populations of the Yushan Mountain Range are likely to have remained stable ever since the colonization. In contrast, the single population of the Alishan Mountain Range with a fixed cpDNA haplotype may have experienced bottleneck/founder's events. BioMed Central 2011-04-19 /pmc/articles/PMC3096940/ /pubmed/21501530 http://dx.doi.org/10.1186/1471-2148-11-108 Text en Copyright ©2011 Huang et al; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Huang, Chi-Chun
Hung, Kuo-Hsiang
Hwang, Chi-Chuan
Huang, Jao-Ching
Lin, Hung-Du
Wang, Wei-Kuang
Wu, Pei-Yin
Hsu, Tsai-Wen
Chiang, Tzen-Yuh
Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title_full Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title_fullStr Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title_full_unstemmed Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title_short Genetic population structure of the alpine species Rhododendron pseudochrysanthum sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
title_sort genetic population structure of the alpine species rhododendron pseudochrysanthum sensu lato (ericaceae) inferred from chloroplast and nuclear dna
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3096940/
https://www.ncbi.nlm.nih.gov/pubmed/21501530
http://dx.doi.org/10.1186/1471-2148-11-108
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