Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)

he genus Posoqueria is a phylogenetically poorly understood Neotropical group of roughly 20-25 species of shrubs and trees in the coffee family Rubiaceae, which presents several intemal taxonomic difficulties. Here, we used samples from 15 species and a high-throughput sequencing strategy to target-...

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Autor principal: Giraldo, S.
Formato: Artículo revista
Lenguaje:Inglés
Publicado: Instituto de Botánica del Nordeste 2023
Acceso en línea:https://revistas.unne.edu.ar/index.php/bon/article/view/6947
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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spelling I48-R154-article-69472023-12-27T22:56:30Z Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae) Giraldo, S. he genus Posoqueria is a phylogenetically poorly understood Neotropical group of roughly 20-25 species of shrubs and trees in the coffee family Rubiaceae, which presents several intemal taxonomic difficulties. Here, we used samples from 15 species and a high-throughput sequencing strategy to target-capture 353 nuclear loci, from which 177 genes were chosen to generate a phylogeny of Posoqueria using the multispecies coalescent (MSC) method. Our study confirms the monophyly of most Posoqueria taxa, providing evidence of phylogenomic distinctiveness of species such as P. mutisii, P. longiflora, P. maxima, P. grandiflora, and P. wiUiamsii, but questions the current circumscription of P. chocoana and P costaricensis. The phylogeny also supports the re-circumscription of P. latifolia, suggesting that populations from Central America and Colombia belong to an undescribed species in the genus. Moreover, our phylogenomic study indicates that flower symmetry and the unique catapult mechanism linked to zygomorphic flowers in Posoqueria is the product of several evolutionary transitions. On the other hand, some phylogenetic relationships in our study were only recovered with weak to moderate support, indicating further investigation is required that could include designing a customised bait panel that allows to resolve recent diversification events in Posoqueria. Instituto de Botánica del Nordeste 2023-10-26 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unne.edu.ar/index.php/bon/article/view/6947 Bonplandia; Vol. 32 (2023): Suplemento; 10 Bonplandia; Vol. 32 (2023): Suplemento; 10 1853-8460 0524-0476 eng https://revistas.unne.edu.ar/index.php/bon/article/view/6947/6361 Derechos de autor 2023 Bonplandia http://creativecommons.org/licenses/by/4.0
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-154
container_title_str Revistas UNNE - Universidad Nacional del Noroeste (UNNE)
language Inglés
format Artículo revista
author Giraldo, S.
spellingShingle Giraldo, S.
Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
author_facet Giraldo, S.
author_sort Giraldo, S.
title Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
title_short Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
title_full Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
title_fullStr Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
title_full_unstemmed Phylogeny and evolution of flower symmetry of Posoqueria (Rubiaceae)
title_sort phylogeny and evolution of flower symmetry of posoqueria (rubiaceae)
description he genus Posoqueria is a phylogenetically poorly understood Neotropical group of roughly 20-25 species of shrubs and trees in the coffee family Rubiaceae, which presents several intemal taxonomic difficulties. Here, we used samples from 15 species and a high-throughput sequencing strategy to target-capture 353 nuclear loci, from which 177 genes were chosen to generate a phylogeny of Posoqueria using the multispecies coalescent (MSC) method. Our study confirms the monophyly of most Posoqueria taxa, providing evidence of phylogenomic distinctiveness of species such as P. mutisii, P. longiflora, P. maxima, P. grandiflora, and P. wiUiamsii, but questions the current circumscription of P. chocoana and P costaricensis. The phylogeny also supports the re-circumscription of P. latifolia, suggesting that populations from Central America and Colombia belong to an undescribed species in the genus. Moreover, our phylogenomic study indicates that flower symmetry and the unique catapult mechanism linked to zygomorphic flowers in Posoqueria is the product of several evolutionary transitions. On the other hand, some phylogenetic relationships in our study were only recovered with weak to moderate support, indicating further investigation is required that could include designing a customised bait panel that allows to resolve recent diversification events in Posoqueria.
publisher Instituto de Botánica del Nordeste
publishDate 2023
url https://revistas.unne.edu.ar/index.php/bon/article/view/6947
work_keys_str_mv AT giraldos phylogenyandevolutionofflowersymmetryofposoqueriarubiaceae
first_indexed 2024-08-21T22:36:56Z
last_indexed 2024-08-21T22:36:56Z
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