Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus
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/10.1093/botlinnean/boaa089 http://hdl.handle.net/11449/206284 |
Resumo: | The Ornithocephalus clade comprises small epiphytes distributed in 12 genera and c. 120 species. Their flowers have complex structures, the homologies of which are difficult to interpret. Through ontogenetic studies, we identified the origins of the tabula infrastigmatica, floral appendages located in the gynostemium and the labellar callus. Using a scanning electron microscope (SEM), we analysed flowers at various developmental stages from representatives of three genera: Ornithocephalus (two species), Phymatidium (two species) and Zygostates (three species). The tabula infrastigmatica of Phymatidium results from the fusion of the lateral carpels and staminodes, with different degrees of synorganization across species and can be considered a plesiomorphic characteristic within the clade. Contradicting hypotheses of a staminodial origin, the auricles present in this genus derive from the gynostemium. In Zygostates, the lateral appendices derive from staminodes and can show different development degrees, whereas in Ornithocephaus that character has been lost. We corroborate the view that the labellum is a single organ derived from the median petal and the labellar callus is derived from it. |
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Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callusfloral ontogenygynostemiumhomologylateral carpelsstaminodesThe Ornithocephalus clade comprises small epiphytes distributed in 12 genera and c. 120 species. Their flowers have complex structures, the homologies of which are difficult to interpret. Through ontogenetic studies, we identified the origins of the tabula infrastigmatica, floral appendages located in the gynostemium and the labellar callus. Using a scanning electron microscope (SEM), we analysed flowers at various developmental stages from representatives of three genera: Ornithocephalus (two species), Phymatidium (two species) and Zygostates (three species). The tabula infrastigmatica of Phymatidium results from the fusion of the lateral carpels and staminodes, with different degrees of synorganization across species and can be considered a plesiomorphic characteristic within the clade. Contradicting hypotheses of a staminodial origin, the auricles present in this genus derive from the gynostemium. In Zygostates, the lateral appendices derive from staminodes and can show different development degrees, whereas in Ornithocephaus that character has been lost. We corroborate the view that the labellum is a single organ derived from the median petal and the labellar callus is derived from it.Programa de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Instituto de BiociênciasMarie Selby Botanical Gardens, 811 South Palm AvenueEvolution and Biodiversity of Plants Faculty for Biology and Biotechnology Ruhr-UniversitätDepartamento de Botânica Universidade Federal Do ParanáUniversidade Estadual Paulista (Unesp)Marie Selby Botanical GardensRuhr-UniversitätUniversidade Federal do Paraná (UFPR)Royer, Carla AToscano De Brito, A. L. VStützel, ThomasSmidt, Eric CNunes, Elaine L. P2021-06-25T10:29:32Z2021-06-25T10:29:32Z2021-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article636-649http://dx.doi.org/10.1093/botlinnean/boaa089Botanical Journal of the Linnean Society, v. 195, n. 4, p. 636-649, 2021.1095-83390024-4074http://hdl.handle.net/11449/20628410.1093/botlinnean/boaa0892-s2.0-85105153334Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBotanical Journal of the Linnean Societyinfo:eu-repo/semantics/openAccess2021-10-23T02:54:31Zoai:repositorio.unesp.br:11449/206284Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:04:40.524544Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
title |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
spellingShingle |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus Royer, Carla A floral ontogeny gynostemium homology lateral carpels staminodes |
title_short |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
title_full |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
title_fullStr |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
title_full_unstemmed |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
title_sort |
Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus |
author |
Royer, Carla A |
author_facet |
Royer, Carla A Toscano De Brito, A. L. V Stützel, Thomas Smidt, Eric C Nunes, Elaine L. P |
author_role |
author |
author2 |
Toscano De Brito, A. L. V Stützel, Thomas Smidt, Eric C Nunes, Elaine L. P |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Marie Selby Botanical Gardens Ruhr-Universität Universidade Federal do Paraná (UFPR) |
dc.contributor.author.fl_str_mv |
Royer, Carla A Toscano De Brito, A. L. V Stützel, Thomas Smidt, Eric C Nunes, Elaine L. P |
dc.subject.por.fl_str_mv |
floral ontogeny gynostemium homology lateral carpels staminodes |
topic |
floral ontogeny gynostemium homology lateral carpels staminodes |
description |
The Ornithocephalus clade comprises small epiphytes distributed in 12 genera and c. 120 species. Their flowers have complex structures, the homologies of which are difficult to interpret. Through ontogenetic studies, we identified the origins of the tabula infrastigmatica, floral appendages located in the gynostemium and the labellar callus. Using a scanning electron microscope (SEM), we analysed flowers at various developmental stages from representatives of three genera: Ornithocephalus (two species), Phymatidium (two species) and Zygostates (three species). The tabula infrastigmatica of Phymatidium results from the fusion of the lateral carpels and staminodes, with different degrees of synorganization across species and can be considered a plesiomorphic characteristic within the clade. Contradicting hypotheses of a staminodial origin, the auricles present in this genus derive from the gynostemium. In Zygostates, the lateral appendices derive from staminodes and can show different development degrees, whereas in Ornithocephaus that character has been lost. We corroborate the view that the labellum is a single organ derived from the median petal and the labellar callus is derived from it. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:29:32Z 2021-06-25T10:29:32Z 2021-04-01 |
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/10.1093/botlinnean/boaa089 Botanical Journal of the Linnean Society, v. 195, n. 4, p. 636-649, 2021. 1095-8339 0024-4074 http://hdl.handle.net/11449/206284 10.1093/botlinnean/boaa089 2-s2.0-85105153334 |
url |
http://dx.doi.org/10.1093/botlinnean/boaa089 http://hdl.handle.net/11449/206284 |
identifier_str_mv |
Botanical Journal of the Linnean Society, v. 195, n. 4, p. 636-649, 2021. 1095-8339 0024-4074 10.1093/botlinnean/boaa089 2-s2.0-85105153334 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Botanical Journal of the Linnean Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
636-649 |
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_ |
1808128890829275136 |