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Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae)
Several naturally occurring hybrids in Potentilla (Rosaceae) have been reported, but no molecular evidence has so far been available to test these hypotheses of hybridization. We have compared a nuclear and a chloroplast gene tree to identify topological incongruences that may indicate hybridization...
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Formato: | Texto |
Lenguaje: | English |
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Public Library of Science
2011
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097082/ https://www.ncbi.nlm.nih.gov/pubmed/21603100 http://dx.doi.org/10.1371/currents.RRN1237 |
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author | Töpel, Mats Lundberg, Magnus Eriksson, Torsten Eriksen, Bente |
author_facet | Töpel, Mats Lundberg, Magnus Eriksson, Torsten Eriksen, Bente |
author_sort | Töpel, Mats |
collection | PubMed |
description | Several naturally occurring hybrids in Potentilla (Rosaceae) have been reported, but no molecular evidence has so far been available to test these hypotheses of hybridization. We have compared a nuclear and a chloroplast gene tree to identify topological incongruences that may indicate hybridization events in the genus. Furthermore, the monophyly and phylogenetic position of the proposed segregated genera Argentina, Ivesia and Horkelia have been tested. The systematic signal from the two morphological characters, style- and anther shape, has also been investigated by ancestral state reconstruction, to elucidate how well these characters concur with the results of the molecular phylogenies. Six major clades, Anserina, Alba, Fragarioides, Reptans, ivesioid and Argentea, have been identified within genus Potentilla. Horkelia, Ivesia and Horkeliella (the ivesioid clade), form a monophyletic group nested within Potentilla. Furthermore, the origin of the proposed segregated genus Argentina (the Anserina clade) is uncertain but not in conflict with a new generic status of the group. We also found style morphology to be an informative character that reflects the phylogenetic relationships within Potentilla. Five well-supported incongruences were found between the nuclear and the chloroplast phylogenies, and three of these involved polyploid taxa. However, further investigations, using low copy molecular markers, are required to infer the phylogeny of these species and to test the hypothesis of hybrid origin. |
format | Text |
id | pubmed-3097082 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-30970822011-05-19 Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) Töpel, Mats Lundberg, Magnus Eriksson, Torsten Eriksen, Bente PLoS Curr Tree of Life Several naturally occurring hybrids in Potentilla (Rosaceae) have been reported, but no molecular evidence has so far been available to test these hypotheses of hybridization. We have compared a nuclear and a chloroplast gene tree to identify topological incongruences that may indicate hybridization events in the genus. Furthermore, the monophyly and phylogenetic position of the proposed segregated genera Argentina, Ivesia and Horkelia have been tested. The systematic signal from the two morphological characters, style- and anther shape, has also been investigated by ancestral state reconstruction, to elucidate how well these characters concur with the results of the molecular phylogenies. Six major clades, Anserina, Alba, Fragarioides, Reptans, ivesioid and Argentea, have been identified within genus Potentilla. Horkelia, Ivesia and Horkeliella (the ivesioid clade), form a monophyletic group nested within Potentilla. Furthermore, the origin of the proposed segregated genus Argentina (the Anserina clade) is uncertain but not in conflict with a new generic status of the group. We also found style morphology to be an informative character that reflects the phylogenetic relationships within Potentilla. Five well-supported incongruences were found between the nuclear and the chloroplast phylogenies, and three of these involved polyploid taxa. However, further investigations, using low copy molecular markers, are required to infer the phylogeny of these species and to test the hypothesis of hybrid origin. Public Library of Science 2011-05-16 /pmc/articles/PMC3097082/ /pubmed/21603100 http://dx.doi.org/10.1371/currents.RRN1237 Text en http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Tree of Life Töpel, Mats Lundberg, Magnus Eriksson, Torsten Eriksen, Bente Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title | Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title_full | Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title_fullStr | Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title_full_unstemmed | Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title_short | Molecular data and ploidal levels indicate several putative allopolyploidization events in the genus Potentilla (Rosaceae) |
title_sort | molecular data and ploidal levels indicate several putative allopolyploidization events in the genus potentilla (rosaceae) |
topic | Tree of Life |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3097082/ https://www.ncbi.nlm.nih.gov/pubmed/21603100 http://dx.doi.org/10.1371/currents.RRN1237 |
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