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Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference

Carpinus (Betulaceae) has approximately 52 species distributed in the Northern Hemisphere, with many species of Carpinus found in China. However, the species boundaries and phylogenetic relationships remain poorly understood. This study reported ITS sequences for 225 individuals of 33 Carpinus speci...

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Autores principales: Dong, Congcong, Lu, Zhiqiang, Zhang, Han, Liu, Jianquan, Li, Minjie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9162125/
https://www.ncbi.nlm.nih.gov/pubmed/35669444
http://dx.doi.org/10.1093/aobpla/plac006
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author Dong, Congcong
Lu, Zhiqiang
Zhang, Han
Liu, Jianquan
Li, Minjie
author_facet Dong, Congcong
Lu, Zhiqiang
Zhang, Han
Liu, Jianquan
Li, Minjie
author_sort Dong, Congcong
collection PubMed
description Carpinus (Betulaceae) has approximately 52 species distributed in the Northern Hemisphere, with many species of Carpinus found in China. However, the species boundaries and phylogenetic relationships remain poorly understood. This study reported ITS sequences for 225 individuals of 33 Carpinus species, mainly from China. We also included eight Ostrya species in our analyses, the closely related sister group of Carpinus. We aimed to delimit these species based on ITS sequences and clarify their phylogenetic relationships by constructing tree-like topology and networks at population level. We found that only 17 of 33 species could be delimited from the closely related ones based on species-specific mutations in ITS sequence variation, including all species of sect. Distegocarpus, and sect. Carpinus subsect. Carpinus. Carpinus subsect. Carpinus contained two endangered species, although one seemed to be a recently originated allopolyploid species with genetic additivity from two likely parents in the ITS sequence variation. Sixteen species of sect. Carpinus subsect. Polyneurae were classified into three species complexes, in each of which two or more could be not distinguished from each other. The closely related species of these complexes may still diverge at the early stage without genetic distinction in the nuclear ITS sequences because of too short of divergence time and frequent gene flow. Otherwise, some species may be established based on the intraspecific variations without genetic bases for an independently evolving unit.
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spelling pubmed-91621252022-06-05 Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference Dong, Congcong Lu, Zhiqiang Zhang, Han Liu, Jianquan Li, Minjie AoB Plants Studies Carpinus (Betulaceae) has approximately 52 species distributed in the Northern Hemisphere, with many species of Carpinus found in China. However, the species boundaries and phylogenetic relationships remain poorly understood. This study reported ITS sequences for 225 individuals of 33 Carpinus species, mainly from China. We also included eight Ostrya species in our analyses, the closely related sister group of Carpinus. We aimed to delimit these species based on ITS sequences and clarify their phylogenetic relationships by constructing tree-like topology and networks at population level. We found that only 17 of 33 species could be delimited from the closely related ones based on species-specific mutations in ITS sequence variation, including all species of sect. Distegocarpus, and sect. Carpinus subsect. Carpinus. Carpinus subsect. Carpinus contained two endangered species, although one seemed to be a recently originated allopolyploid species with genetic additivity from two likely parents in the ITS sequence variation. Sixteen species of sect. Carpinus subsect. Polyneurae were classified into three species complexes, in each of which two or more could be not distinguished from each other. The closely related species of these complexes may still diverge at the early stage without genetic distinction in the nuclear ITS sequences because of too short of divergence time and frequent gene flow. Otherwise, some species may be established based on the intraspecific variations without genetic bases for an independently evolving unit. Oxford University Press 2022-02-21 /pmc/articles/PMC9162125/ /pubmed/35669444 http://dx.doi.org/10.1093/aobpla/plac006 Text en © The Author(s) 2022. Published by Oxford University Press on behalf of the Annals of Botany Company. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Studies
Dong, Congcong
Lu, Zhiqiang
Zhang, Han
Liu, Jianquan
Li, Minjie
Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title_full Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title_fullStr Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title_full_unstemmed Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title_short Delimiting 33 Carpinus (Betulaceae) species with a further phylogenetic inference
title_sort delimiting 33 carpinus (betulaceae) species with a further phylogenetic inference
topic Studies
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9162125/
https://www.ncbi.nlm.nih.gov/pubmed/35669444
http://dx.doi.org/10.1093/aobpla/plac006
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