Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?

Galianthe Griseb. is a neotropical genus comprising 50 species divided into two subgenera: G. subgen. Galianthe (41 spp.), characterized by homogeneous morphological traits, with species further divided into two sections (G. secc. Galianthe and G. secc. Laxae); and G. subgen. Ebelia (14 spp.) with m...

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Autores principales: Florentín, J. E., Nuñez Florentin, M., Pérez, M. L., Dessein, S., Janssens, S. B., Salas, R. M.
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/6946
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Revistas UNNE - Universidad Nacional del Noroeste (UNNE) de Universidad Nacional del Nordeste
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spelling I48-R154-article-69462023-12-27T22:56:30Z Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective? Florentín, J. E. Nuñez Florentin, M. Pérez, M. L. Dessein, S. Janssens, S. B. Salas, R. M. Galianthe Griseb. is a neotropical genus comprising 50 species divided into two subgenera: G. subgen. Galianthe (41 spp.), characterized by homogeneous morphological traits, with species further divided into two sections (G. secc. Galianthe and G. secc. Laxae); and G. subgen. Ebelia (14 spp.) with more heterogeneous morphological characteristics. Due to its morphological similarity with other genera, Galianthe has historically been associated with Borreria, Spermacoce, Diodia (based on fruit type), as well as Denscantia and Emmeorhiza (based on inflorescence type). In recent years, molecular studies have established Galianthe as a basal genus within the Spermacoce clade, closely related to other genera such as Carajasia and Schwendenera. Despite the progress made in recent molecular studies, the studies have focused on a limited number of species within the genus, failing to encompass all infrageneric categories. Questioning of the current taxonomic delimitation of the genus, this study aims to test the monophyly of Galianthe and explore its infrageneric and interspecific phylogenetic relationships. Three markers (two nuclear: ITS, ETS, and one plastid: rps16) were utilized, encompassing 107 entities, including 42 Galianthe species, thereby representing 76% of the current genus diversity, as well as 17 closely related genera within the Spermacoce clade. The phylogenetic results confirm the monophyly of Galianthe, revealing the presence of three major subclades. Subclades I and II comprise several G. subgen. Ebelia species, whereas subclade III consists of all G. subgen. Galianthe species plus G. angulata. Regarding the sections, monophyly was not supported. Based on these findings, it can be concluded that G. subgen. Ebelia is paraphyletic, G. subgen. Galianthe is potentially paraphyletic due to G. angulata, and there is no clear distinction between the sections. 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/6946 Bonplandia; Vol. 32 (2023): Suplemento; 9 Bonplandia; Vol. 32 (2023): Suplemento; 9 1853-8460 0524-0476 eng https://revistas.unne.edu.ar/index.php/bon/article/view/6946/6360 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 Florentín, J. E.
Nuñez Florentin, M.
Pérez, M. L.
Dessein, S.
Janssens, S. B.
Salas, R. M.
spellingShingle Florentín, J. E.
Nuñez Florentin, M.
Pérez, M. L.
Dessein, S.
Janssens, S. B.
Salas, R. M.
Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
author_facet Florentín, J. E.
Nuñez Florentin, M.
Pérez, M. L.
Dessein, S.
Janssens, S. B.
Salas, R. M.
author_sort Florentín, J. E.
title Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
title_short Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
title_full Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
title_fullStr Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
title_full_unstemmed Does the current taxonomic delimitation of Galianthe find support in phylogenetic perspective?
title_sort does the current taxonomic delimitation of galianthe find support in phylogenetic perspective?
description Galianthe Griseb. is a neotropical genus comprising 50 species divided into two subgenera: G. subgen. Galianthe (41 spp.), characterized by homogeneous morphological traits, with species further divided into two sections (G. secc. Galianthe and G. secc. Laxae); and G. subgen. Ebelia (14 spp.) with more heterogeneous morphological characteristics. Due to its morphological similarity with other genera, Galianthe has historically been associated with Borreria, Spermacoce, Diodia (based on fruit type), as well as Denscantia and Emmeorhiza (based on inflorescence type). In recent years, molecular studies have established Galianthe as a basal genus within the Spermacoce clade, closely related to other genera such as Carajasia and Schwendenera. Despite the progress made in recent molecular studies, the studies have focused on a limited number of species within the genus, failing to encompass all infrageneric categories. Questioning of the current taxonomic delimitation of the genus, this study aims to test the monophyly of Galianthe and explore its infrageneric and interspecific phylogenetic relationships. Three markers (two nuclear: ITS, ETS, and one plastid: rps16) were utilized, encompassing 107 entities, including 42 Galianthe species, thereby representing 76% of the current genus diversity, as well as 17 closely related genera within the Spermacoce clade. The phylogenetic results confirm the monophyly of Galianthe, revealing the presence of three major subclades. Subclades I and II comprise several G. subgen. Ebelia species, whereas subclade III consists of all G. subgen. Galianthe species plus G. angulata. Regarding the sections, monophyly was not supported. Based on these findings, it can be concluded that G. subgen. Ebelia is paraphyletic, G. subgen. Galianthe is potentially paraphyletic due to G. angulata, and there is no clear distinction between the sections.
publisher Instituto de Botánica del Nordeste
publishDate 2023
url https://revistas.unne.edu.ar/index.php/bon/article/view/6946
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first_indexed 2024-08-21T22:36:56Z
last_indexed 2024-08-21T22:36:56Z
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