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Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences
Myrceugenia is a genus endemic to South America with a disjunct distribution: 12 species occurring mainly in central Chile and approximately 25 in southeastern Brazil. Relationships are reconstructed within Myrceugenia from four plastid markers (partial trnK-matK, rpl32-trnL, trnQ-5′rps16 and rpl16)...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Academic Press
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3260418/ https://www.ncbi.nlm.nih.gov/pubmed/22155422 http://dx.doi.org/10.1016/j.ympev.2011.11.021 |
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author | Murillo-A., José Ruiz-P., Eduardo Landrum, Leslie R. Stuessy, Tod F. Barfuss, Michael H.J. |
author_facet | Murillo-A., José Ruiz-P., Eduardo Landrum, Leslie R. Stuessy, Tod F. Barfuss, Michael H.J. |
author_sort | Murillo-A., José |
collection | PubMed |
description | Myrceugenia is a genus endemic to South America with a disjunct distribution: 12 species occurring mainly in central Chile and approximately 25 in southeastern Brazil. Relationships are reconstructed within Myrceugenia from four plastid markers (partial trnK-matK, rpl32-trnL, trnQ-5′rps16 and rpl16) and two ribosomal nuclear regions (ETS and ITS) using maximum parsimony and Bayesian analyses. Relationships inferred previously from morphological data are not completely consistent with those from molecular data. All molecular analyses support the hypothesis that Myrceugenia is monophyletic, except for M. fernadeziana that falls outside the genus. Chilean species and Brazilian species form two separate lineages. Chilean species form three early diverging clades, whereas Brazilian species are a strongly supported monophyletic group in a terminal position. Least average evolutionary divergence, low resolution, short branches, and high species diversity found in the Brazilian clade suggest rapid radiation. Geographical distributions and phylogenetic reconstructions suggest that extant Myrceugenia species arose in northern Chile followed by colonization southward and finally to the Juan Fernández Islands and southeastern Brazil. |
format | Online Article Text |
id | pubmed-3260418 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Academic Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-32604182012-02-01 Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences Murillo-A., José Ruiz-P., Eduardo Landrum, Leslie R. Stuessy, Tod F. Barfuss, Michael H.J. Mol Phylogenet Evol Article Myrceugenia is a genus endemic to South America with a disjunct distribution: 12 species occurring mainly in central Chile and approximately 25 in southeastern Brazil. Relationships are reconstructed within Myrceugenia from four plastid markers (partial trnK-matK, rpl32-trnL, trnQ-5′rps16 and rpl16) and two ribosomal nuclear regions (ETS and ITS) using maximum parsimony and Bayesian analyses. Relationships inferred previously from morphological data are not completely consistent with those from molecular data. All molecular analyses support the hypothesis that Myrceugenia is monophyletic, except for M. fernadeziana that falls outside the genus. Chilean species and Brazilian species form two separate lineages. Chilean species form three early diverging clades, whereas Brazilian species are a strongly supported monophyletic group in a terminal position. Least average evolutionary divergence, low resolution, short branches, and high species diversity found in the Brazilian clade suggest rapid radiation. Geographical distributions and phylogenetic reconstructions suggest that extant Myrceugenia species arose in northern Chile followed by colonization southward and finally to the Juan Fernández Islands and southeastern Brazil. Academic Press 2012-02 /pmc/articles/PMC3260418/ /pubmed/22155422 http://dx.doi.org/10.1016/j.ympev.2011.11.021 Text en © 2012 Elsevier Inc. https://creativecommons.org/licenses/by-nc-nd/3.0/ Open Access under CC BY-NC-ND 3.0 (https://creativecommons.org/licenses/by-nc-nd/3.0/) license |
spellingShingle | Article Murillo-A., José Ruiz-P., Eduardo Landrum, Leslie R. Stuessy, Tod F. Barfuss, Michael H.J. Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title | Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title_full | Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title_fullStr | Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title_full_unstemmed | Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title_short | Phylogenetic relationships in Myrceugenia (Myrtaceae) based on plastid and nuclear DNA sequences |
title_sort | phylogenetic relationships in myrceugenia (myrtaceae) based on plastid and nuclear dna sequences |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3260418/ https://www.ncbi.nlm.nih.gov/pubmed/22155422 http://dx.doi.org/10.1016/j.ympev.2011.11.021 |
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