The functional roles of 3D heterostyly and floral visitors in the reproductive biology of Turnera subulata (Turneroideae: Passifloraceae)

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Autor(es): dc.contributorUniversidade Federal de Viçosa (UFV)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorBiology Centre of the Czech Academy of Sciences-
Autor(es): dc.contributorUniversity of Portsmouth-
Autor(es): dc.creatorRech, André Rodrigo-
Autor(es): dc.creatorAchkar, Marina Teixeira [UNESP]-
Autor(es): dc.creatorJorge, Leonardo Ré-
Autor(es): dc.creatorArmbruster, W. Scott-
Autor(es): dc.creatorAlmeida, Odair J.G.-
Data de aceite: dc.date.accessioned2022-02-22T00:24:47Z-
Data de disponibilização: dc.date.available2022-02-22T00:24:47Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-03-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.flora.2020.151559-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198530-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198530-
Descrição: dc.descriptionHeterostyly is a floral polymorphism that reduces conflicts between sexual functions (sexual interference), such as self-pollination in self-incompatible flowers and loss of pollen to incompatible stigmas. In many distylous pollination systems, there is a remarkable structural fit between the stigmas of each morph and the part of the pollinator body where compatible (disassortative) pollen is deposited. Nevertheless, inter-morph pollen transfer is often asymmetrical, with short-styled flowers (S-morph) receiving less compatible pollen than long-styled flowers (L-morph). One way to reduce the problem of sexual interference in short-styled flowers is to place stigmas outside of the flower centre, as seen in three-dimensionally (3D) heterostylous flowers. Heterostyly in Turnera has been extensively studied; however, 3D heterostyly has not been previously reported in this genus. The aims of this study were: 1) to elucidate the pollination system of T. subulata; and 2) to assess whether 3D heterostyly promotes disassortative pollination and reduces self-pollination in short-styled flowers in this taxon. The study population of Turnera subulata exhibited an isoplethic (1:1) ratio, with two well-defined morphs, and a high floral accuracy index for both morphs. Results from an experiment in which we manipulated the 3D orientation of the style showed that compatible crosses were favoured by the 3D flower morphology, consistent with a high floral accuracy. Our results also demonstrate the functional importance of 3D heterostyly in reducing intramorph pollination, as it increases the amount of cross pollen reaching the S-morph flowers. Our results provide the first observation of the presence of 3D heterostyly in this well-studied species and demonstrate the importance of this kind of morphological specialization in ensuring efficiency in an ecologically generalized pollination system.-
Descrição: dc.descriptionUniversidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM) Licenciatura em Educação do Campo-
Descrição: dc.descriptionPlant Morphology Lab Biosciences Institute Coastal Campus São Paulo State University UNESP-
Descrição: dc.descriptionDepartamento de Biologia Animal Universidade Estadual de Campinas (UNICAMP)-
Descrição: dc.descriptionDepartament of Ecology Institude of Entomology Biology Centre of the Czech Academy of Sciences-
Descrição: dc.descriptionSchool of Biological Sciences University of Portsmouth-
Descrição: dc.descriptionPlant Morphology Lab Biosciences Institute Coastal Campus São Paulo State University UNESP-
Idioma: dc.languageen-
Relação: dc.relationFlora: Morphology, Distribution, Functional Ecology of Plants-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDisassortative pollination-
Palavras-chave: dc.subjectFloral accuracy-
Palavras-chave: dc.subjectGeneralized pollination system-
Palavras-chave: dc.subjectL-morph flower-
Palavras-chave: dc.subjectS-morph flower-
Título: dc.titleThe functional roles of 3D heterostyly and floral visitors in the reproductive biology of Turnera subulata (Turneroideae: Passifloraceae)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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