Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.sajb.2021.03.013 http://hdl.handle.net/11449/228915 |
Resumo: | Mesanthemum is a genus of Eriocaulaceae endemic to Africa whose petals are free at the base and fused from the middle region up to the apex. Detailed studies on its floral morphology are scarce and based only on exsiccates, while the floral anatomy remains understudied. However, information regarding its floral structure is key to understanding the evolution of Eriocaulaceae. We provided details on the floral morphology and anatomy of M. radicans to evaluate characters with taxonomic and evolutionary importance. The flowers of M. radicans have tightly packed floral parts and reduced vasculature. They have petals with three vascular bundles, in contrast to a single bundle in petals of other Eriocaulaceae. Each petal receives three vascular traces, as in Xyridaceae, but they diverge from common petal-inner stamen traces. The type of petal fusion and the presence of stamens at two heights in M. radicans are probably related to space constraints in the floral buds of this species. However, further studies are necessary to comprehend the developmental processes that lead to petal fusion in Mesanthemum. The fact that the outer stamens are shorter than the inner ones can be interpreted as a step towards their loss in Paepalanthoideae. Furthermore, the petal glands and the carpellodes share characteristics, such as shape and the presence and location of papillae, that may be diagnostic for Eriocaulaceae. |
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Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical noveltiesCarpellodePetal fusionPetal glandXyridaceaeXyridsMesanthemum is a genus of Eriocaulaceae endemic to Africa whose petals are free at the base and fused from the middle region up to the apex. Detailed studies on its floral morphology are scarce and based only on exsiccates, while the floral anatomy remains understudied. However, information regarding its floral structure is key to understanding the evolution of Eriocaulaceae. We provided details on the floral morphology and anatomy of M. radicans to evaluate characters with taxonomic and evolutionary importance. The flowers of M. radicans have tightly packed floral parts and reduced vasculature. They have petals with three vascular bundles, in contrast to a single bundle in petals of other Eriocaulaceae. Each petal receives three vascular traces, as in Xyridaceae, but they diverge from common petal-inner stamen traces. The type of petal fusion and the presence of stamens at two heights in M. radicans are probably related to space constraints in the floral buds of this species. However, further studies are necessary to comprehend the developmental processes that lead to petal fusion in Mesanthemum. The fact that the outer stamens are shorter than the inner ones can be interpreted as a step towards their loss in Paepalanthoideae. Furthermore, the petal glands and the carpellodes share characteristics, such as shape and the presence and location of papillae, that may be diagnostic for Eriocaulaceae.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)American Friends of the Alexander von Humboldt FoundationFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)Programa de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Universidade Estadual Paulista “Júlio de Mesquita Filho” Instituto de Biociências de Rio Claro, Av. 24 A 1515, Bela Vista, Caixa Postal 199Lehrstuhl für Evolution und Biodiversität der Pflanzen Ruhr-Universität Bochum, Universitätsstr. 150Departamento de Botânica Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho 373, Cidade UniversitáriaDepartamento de Biodiversidade Universidade Estadual Paulista “Júlio de Mesquita Filho”, Av. 24-A 1515, Bela VistaPrograma de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Universidade Estadual Paulista “Júlio de Mesquita Filho” Instituto de Biociências de Rio Claro, Av. 24 A 1515, Bela Vista, Caixa Postal 199Departamento de Biodiversidade Universidade Estadual Paulista “Júlio de Mesquita Filho”, Av. 24-A 1515, Bela VistaCNPq: 140014/2017–9American Friends of the Alexander von Humboldt Foundation: E-26/202.708/2019Universidade Estadual Paulista (UNESP)Ruhr-Universität BochumUniversidade Federal do Rio de Janeiro (UFRJ)Silva, Arthur de Lima [UNESP]Stützel, ThomasTrovó, MarceloCoan, Alessandra Ike [UNESP]2022-04-29T08:29:25Z2022-04-29T08:29:25Z2021-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article306-317http://dx.doi.org/10.1016/j.sajb.2021.03.013South African Journal of Botany, v. 139, p. 306-317.0254-6299http://hdl.handle.net/11449/22891510.1016/j.sajb.2021.03.0132-s2.0-85102887933Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSouth African Journal of Botanyinfo:eu-repo/semantics/openAccess2022-04-29T08:29:25Zoai:repositorio.unesp.br:11449/228915Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T08:29:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
title |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
spellingShingle |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties Silva, Arthur de Lima [UNESP] Carpellode Petal fusion Petal gland Xyridaceae Xyrids |
title_short |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
title_full |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
title_fullStr |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
title_full_unstemmed |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
title_sort |
Floral structure of Mesanthemum radicans (Eriocaulaceae, Poales): morphological and anatomical novelties |
author |
Silva, Arthur de Lima [UNESP] |
author_facet |
Silva, Arthur de Lima [UNESP] Stützel, Thomas Trovó, Marcelo Coan, Alessandra Ike [UNESP] |
author_role |
author |
author2 |
Stützel, Thomas Trovó, Marcelo Coan, Alessandra Ike [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Ruhr-Universität Bochum Universidade Federal do Rio de Janeiro (UFRJ) |
dc.contributor.author.fl_str_mv |
Silva, Arthur de Lima [UNESP] Stützel, Thomas Trovó, Marcelo Coan, Alessandra Ike [UNESP] |
dc.subject.por.fl_str_mv |
Carpellode Petal fusion Petal gland Xyridaceae Xyrids |
topic |
Carpellode Petal fusion Petal gland Xyridaceae Xyrids |
description |
Mesanthemum is a genus of Eriocaulaceae endemic to Africa whose petals are free at the base and fused from the middle region up to the apex. Detailed studies on its floral morphology are scarce and based only on exsiccates, while the floral anatomy remains understudied. However, information regarding its floral structure is key to understanding the evolution of Eriocaulaceae. We provided details on the floral morphology and anatomy of M. radicans to evaluate characters with taxonomic and evolutionary importance. The flowers of M. radicans have tightly packed floral parts and reduced vasculature. They have petals with three vascular bundles, in contrast to a single bundle in petals of other Eriocaulaceae. Each petal receives three vascular traces, as in Xyridaceae, but they diverge from common petal-inner stamen traces. The type of petal fusion and the presence of stamens at two heights in M. radicans are probably related to space constraints in the floral buds of this species. However, further studies are necessary to comprehend the developmental processes that lead to petal fusion in Mesanthemum. The fact that the outer stamens are shorter than the inner ones can be interpreted as a step towards their loss in Paepalanthoideae. Furthermore, the petal glands and the carpellodes share characteristics, such as shape and the presence and location of papillae, that may be diagnostic for Eriocaulaceae. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-07-01 2022-04-29T08:29:25Z 2022-04-29T08:29:25Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.sajb.2021.03.013 South African Journal of Botany, v. 139, p. 306-317. 0254-6299 http://hdl.handle.net/11449/228915 10.1016/j.sajb.2021.03.013 2-s2.0-85102887933 |
url |
http://dx.doi.org/10.1016/j.sajb.2021.03.013 http://hdl.handle.net/11449/228915 |
identifier_str_mv |
South African Journal of Botany, v. 139, p. 306-317. 0254-6299 10.1016/j.sajb.2021.03.013 2-s2.0-85102887933 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
South African Journal of Botany |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
306-317 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803047307028987904 |