Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA
<p>Abstract</p> <p>Background</p> <p>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 <it&g...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMC
2011-04-01
|
| Series: | BMC Evolutionary Biology |
| Online Access: | http://www.biomedcentral.com/1471-2148/11/108 |
| _version_ | 1818390596810702848 |
|---|---|
| author | Wang Wei-Kuang Lin Hung-Du Huang Jao-Ching Hwang Chi-Chuan Hung Kuo-Hsiang Huang Chi-Chun Wu Pei-Yin Hsu Tsai-Wen Chiang Tzen-Yuh |
| author_facet | Wang Wei-Kuang Lin Hung-Du Huang Jao-Ching Hwang Chi-Chuan Hung Kuo-Hsiang Huang Chi-Chun Wu Pei-Yin Hsu Tsai-Wen Chiang Tzen-Yuh |
| author_sort | Wang Wei-Kuang |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>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 <it>Rhododendron pseudochrysanthum </it>s. l.</p> <p>Results</p> <p>Systematic inconsistency was detected between gene genealogies of the cpDNA and nrDNA. Rooted at <it>R. hyperythrum </it>and <it>R. formosana</it>, both trees lacked reciprocal monophyly for all members of the complex. For <it>R. pseudochrysanthum </it>s.l., the spatial distribution of the cpDNA had a noteworthy pattern showing high genetic differentiation (F<sub>ST </sub>= 0.56-0.72) between populations in the Yushan Mountain Range and populations of the other mountain ranges.</p> <p>Conclusion</p> <p>Both incomplete lineage sorting and interspecific hybridization/introgression may have contributed to the lack of monophyly among <it>R. hyperythrum</it>, <it>R. formosana </it>and <it>R. pseudochrysanthum </it>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.</p> |
| first_indexed | 2024-12-14T05:00:09Z |
| format | Article |
| id | doaj.art-6195a4efdea54919bd525a5936d70bc2 |
| institution | Directory Open Access Journal |
| issn | 1471-2148 |
| language | English |
| last_indexed | 2024-12-14T05:00:09Z |
| publishDate | 2011-04-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Evolutionary Biology |
| spelling | doaj.art-6195a4efdea54919bd525a5936d70bc22022-12-21T23:16:15ZengBMCBMC Evolutionary Biology1471-21482011-04-0111110810.1186/1471-2148-11-108Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNAWang Wei-KuangLin Hung-DuHuang Jao-ChingHwang Chi-ChuanHung Kuo-HsiangHuang Chi-ChunWu Pei-YinHsu Tsai-WenChiang Tzen-Yuh<p>Abstract</p> <p>Background</p> <p>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 <it>Rhododendron pseudochrysanthum </it>s. l.</p> <p>Results</p> <p>Systematic inconsistency was detected between gene genealogies of the cpDNA and nrDNA. Rooted at <it>R. hyperythrum </it>and <it>R. formosana</it>, both trees lacked reciprocal monophyly for all members of the complex. For <it>R. pseudochrysanthum </it>s.l., the spatial distribution of the cpDNA had a noteworthy pattern showing high genetic differentiation (F<sub>ST </sub>= 0.56-0.72) between populations in the Yushan Mountain Range and populations of the other mountain ranges.</p> <p>Conclusion</p> <p>Both incomplete lineage sorting and interspecific hybridization/introgression may have contributed to the lack of monophyly among <it>R. hyperythrum</it>, <it>R. formosana </it>and <it>R. pseudochrysanthum </it>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.</p>http://www.biomedcentral.com/1471-2148/11/108 |
| spellingShingle | Wang Wei-Kuang Lin Hung-Du Huang Jao-Ching Hwang Chi-Chuan Hung Kuo-Hsiang Huang Chi-Chun Wu Pei-Yin Hsu Tsai-Wen Chiang Tzen-Yuh Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA BMC Evolutionary Biology |
| title | Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA |
| title_full | Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA |
| title_fullStr | Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA |
| title_full_unstemmed | Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA |
| title_short | Genetic population structure of the alpine species <it>Rhododendron pseudochrysanthum </it>sensu lato (Ericaceae) inferred from chloroplast and nuclear DNA |
| title_sort | genetic population structure of the alpine species it rhododendron pseudochrysanthum it sensu lato ericaceae inferred from chloroplast and nuclear dna |
| url | http://www.biomedcentral.com/1471-2148/11/108 |
| work_keys_str_mv | AT wangweikuang geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT linhungdu geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT huangjaoching geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT hwangchichuan geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT hungkuohsiang geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT huangchichun geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT wupeiyin geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT hsutsaiwen geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna AT chiangtzenyuh geneticpopulationstructureofthealpinespeciesitrhododendronpseudochrysanthumitsensulatoericaceaeinferredfromchloroplastandnucleardna |