Floral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus

Registro completo de metadados
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorMarie Selby Botanical Gardens-
Autor(es): dc.contributorRuhr-Universität-
Autor(es): dc.contributorUniversidade Federal do Paraná (UFPR)-
Autor(es): dc.creatorRoyer, Carla A-
Autor(es): dc.creatorToscano De Brito, A. L. V-
Autor(es): dc.creatorStützel, Thomas-
Autor(es): dc.creatorSmidt, Eric C-
Autor(es): dc.creatorNunes, Elaine L. P-
Data de aceite: dc.date.accessioned2022-02-22T00:46:40Z-
Data de disponibilização: dc.date.available2022-02-22T00:46:40Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-04-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/botlinnean/boaa089-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206284-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206284-
Descrição: dc.descriptionThe 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.-
Descrição: dc.descriptionPrograma de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Instituto de Biociências-
Descrição: dc.descriptionMarie Selby Botanical Gardens, 811 South Palm Avenue-
Descrição: dc.descriptionEvolution and Biodiversity of Plants Faculty for Biology and Biotechnology Ruhr-Universität-
Descrição: dc.descriptionDepartamento de Botânica Universidade Federal Do Paraná-
Formato: dc.format636-649-
Idioma: dc.languageen-
Relação: dc.relationBotanical Journal of the Linnean Society-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectfloral ontogeny-
Palavras-chave: dc.subjectgynostemium-
Palavras-chave: dc.subjecthomology-
Palavras-chave: dc.subjectlateral carpels-
Palavras-chave: dc.subjectstaminodes-
Título: dc.titleFloral development of the Ornithocephalus clade (Oncidiinae, Orchidaceae): The origin of the tabula infrastigmatica, gynostemium appendices and labellar callus-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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