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A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species
The genus Mentha is taxonomically and phylogenetically challenging due to complex genomes, polyploidization and an extensive historical nomenclature, potentially hiding cryptic taxa. A straightforward interpretation of phylogenetic relationships within the section Mentha is further hindered by domin...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8074783/ https://www.ncbi.nlm.nih.gov/pubmed/33924227 http://dx.doi.org/10.3390/plants10040819 |
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author | Heylen, Olivier C. G. Debortoli, Nicolas Marescaux, Jonathan Olofsson, Jill K. |
author_facet | Heylen, Olivier C. G. Debortoli, Nicolas Marescaux, Jonathan Olofsson, Jill K. |
author_sort | Heylen, Olivier C. G. |
collection | PubMed |
description | The genus Mentha is taxonomically and phylogenetically challenging due to complex genomes, polyploidization and an extensive historical nomenclature, potentially hiding cryptic taxa. A straightforward interpretation of phylogenetic relationships within the section Mentha is further hindered by dominant but outdated concepts on historically identified hybrid taxa. Mentha spicata is traditionally considered to be of hybrid origin, but the evidence for this is weak. Here, we aim to understand the phylogenetic relationships within the section Mentha using large sample sizes and to revisit the hybrid status and identity of M. spicata. We show that two of three traditional species in the subsection Spicatae are polyphyletic, as is the subsection as a whole, while the real number of cryptic species was underestimated. Compared to previous studies we present a fundamentally different phylogeny, with a basal split between M. spicata s.s. and M. longifolia s.s. Cluster analyses of morphological and genotypic data demonstrate that there is a dissociation between morphologically and genotypically defined groups of samples. We did not find any evidence that M. spicata is of hybrid origin, and we conclude its taxonomic status should be revised. The combination of genetic and phenotypic information is essential when evaluating hyperdiverse taxonomic groups. |
format | Online Article Text |
id | pubmed-8074783 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-80747832021-04-27 A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species Heylen, Olivier C. G. Debortoli, Nicolas Marescaux, Jonathan Olofsson, Jill K. Plants (Basel) Article The genus Mentha is taxonomically and phylogenetically challenging due to complex genomes, polyploidization and an extensive historical nomenclature, potentially hiding cryptic taxa. A straightforward interpretation of phylogenetic relationships within the section Mentha is further hindered by dominant but outdated concepts on historically identified hybrid taxa. Mentha spicata is traditionally considered to be of hybrid origin, but the evidence for this is weak. Here, we aim to understand the phylogenetic relationships within the section Mentha using large sample sizes and to revisit the hybrid status and identity of M. spicata. We show that two of three traditional species in the subsection Spicatae are polyphyletic, as is the subsection as a whole, while the real number of cryptic species was underestimated. Compared to previous studies we present a fundamentally different phylogeny, with a basal split between M. spicata s.s. and M. longifolia s.s. Cluster analyses of morphological and genotypic data demonstrate that there is a dissociation between morphologically and genotypically defined groups of samples. We did not find any evidence that M. spicata is of hybrid origin, and we conclude its taxonomic status should be revised. The combination of genetic and phenotypic information is essential when evaluating hyperdiverse taxonomic groups. MDPI 2021-04-20 /pmc/articles/PMC8074783/ /pubmed/33924227 http://dx.doi.org/10.3390/plants10040819 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Heylen, Olivier C. G. Debortoli, Nicolas Marescaux, Jonathan Olofsson, Jill K. A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title | A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title_full | A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title_fullStr | A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title_full_unstemmed | A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title_short | A Revised Phylogeny of the Mentha spicata Clade Reveals Cryptic Species |
title_sort | revised phylogeny of the mentha spicata clade reveals cryptic species |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8074783/ https://www.ncbi.nlm.nih.gov/pubmed/33924227 http://dx.doi.org/10.3390/plants10040819 |
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