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Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae)
Phylogenetic analyses were performed using multiple nuclear (ITS and ETS) and chloroplast regions (ndhF-trnL, psbA-trnH, psbD-trnT, and trnT-trnL) to test the monophyly of Aconitum subgen. Lycoctonum (Ranunculaceae) and reconstruct the phylogenetic relationships within the subgenus. The subgenus as...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5334035/ https://www.ncbi.nlm.nih.gov/pubmed/28141851 http://dx.doi.org/10.1371/journal.pone.0171038 |
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author | Hong, Yu Luo, Yan Gao, Qi Ren, Chen Yuan, Qiong Yang, Qin-Er |
author_facet | Hong, Yu Luo, Yan Gao, Qi Ren, Chen Yuan, Qiong Yang, Qin-Er |
author_sort | Hong, Yu |
collection | PubMed |
description | Phylogenetic analyses were performed using multiple nuclear (ITS and ETS) and chloroplast regions (ndhF-trnL, psbA-trnH, psbD-trnT, and trnT-trnL) to test the monophyly of Aconitum subgen. Lycoctonum (Ranunculaceae) and reconstruct the phylogenetic relationships within the subgenus. The subgenus as currently circumscribed is revealed to be polyphyletic. To achieve its monophyly, sect. Galeata and sect. Fletcherum, both being unispecific and each having a unique array of characters (the latter even having the aberrant base chromosome number of x = 6), must be removed from the subgenus. The subgenus Lycoctonum should thus be redefined to include only two sections, the unispecific sect. Alatospermum and the relatively species-rich sect. Lycoctonum. The section Alatospermum, which is both morphologically and karyologically in the primitive condition, is resolved as the first diverging lineage of the subgenus Lycoctonum clade. The monophyly of sect. Lycoctonum is strongly supported, but all the ten series currently recognized within the section are revealed to be para- or poly-phyletic. Five major clades are recovered within the section. We propose to treat them as five series: ser. Crassiflora, ser. Scaposa, ser. Volubilia, ser. Longicassidata, and ser. Lycoctonia. Thus, a formal reclassification of subgen. Lycoctonum is presented, which involves segregating both sect. Galeata and sect. Fletcherum from the subgenus as two independent subgenera within the genus Aconitum, reinstating one series (ser. Crassiflora) and abolishing six series (ser. Laevia, ser. Longibracteolata, ser. Micrantha, ser. Ranunculoidea, ser. Reclinata, and ser. Umbrosa) within sect. Lycoctonum. The series affiliation of some species within the section is adjusted accordingly. |
format | Online Article Text |
id | pubmed-5334035 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-53340352017-03-10 Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) Hong, Yu Luo, Yan Gao, Qi Ren, Chen Yuan, Qiong Yang, Qin-Er PLoS One Research Article Phylogenetic analyses were performed using multiple nuclear (ITS and ETS) and chloroplast regions (ndhF-trnL, psbA-trnH, psbD-trnT, and trnT-trnL) to test the monophyly of Aconitum subgen. Lycoctonum (Ranunculaceae) and reconstruct the phylogenetic relationships within the subgenus. The subgenus as currently circumscribed is revealed to be polyphyletic. To achieve its monophyly, sect. Galeata and sect. Fletcherum, both being unispecific and each having a unique array of characters (the latter even having the aberrant base chromosome number of x = 6), must be removed from the subgenus. The subgenus Lycoctonum should thus be redefined to include only two sections, the unispecific sect. Alatospermum and the relatively species-rich sect. Lycoctonum. The section Alatospermum, which is both morphologically and karyologically in the primitive condition, is resolved as the first diverging lineage of the subgenus Lycoctonum clade. The monophyly of sect. Lycoctonum is strongly supported, but all the ten series currently recognized within the section are revealed to be para- or poly-phyletic. Five major clades are recovered within the section. We propose to treat them as five series: ser. Crassiflora, ser. Scaposa, ser. Volubilia, ser. Longicassidata, and ser. Lycoctonia. Thus, a formal reclassification of subgen. Lycoctonum is presented, which involves segregating both sect. Galeata and sect. Fletcherum from the subgenus as two independent subgenera within the genus Aconitum, reinstating one series (ser. Crassiflora) and abolishing six series (ser. Laevia, ser. Longibracteolata, ser. Micrantha, ser. Ranunculoidea, ser. Reclinata, and ser. Umbrosa) within sect. Lycoctonum. The series affiliation of some species within the section is adjusted accordingly. Public Library of Science 2017-01-31 /pmc/articles/PMC5334035/ /pubmed/28141851 http://dx.doi.org/10.1371/journal.pone.0171038 Text en © 2017 Hong et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Hong, Yu Luo, Yan Gao, Qi Ren, Chen Yuan, Qiong Yang, Qin-Er Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title | Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title_full | Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title_fullStr | Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title_full_unstemmed | Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title_short | Phylogeny and reclassification of Aconitum subgenus Lycoctonum (Ranunculaceae) |
title_sort | phylogeny and reclassification of aconitum subgenus lycoctonum (ranunculaceae) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5334035/ https://www.ncbi.nlm.nih.gov/pubmed/28141851 http://dx.doi.org/10.1371/journal.pone.0171038 |
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