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dc.contributor.authorRocha, Danilo Massuia-
dc.contributor.authorNogueira, Fernanda Mayara-
dc.contributor.authorAndré, Thiago José de Carvalho-
dc.contributor.authorMariath, Jorge Ernesto de Araujo-
dc.contributor.authorVanzela, André Luís Laforga-
dc.date.accessioned2025-09-25T12:31:55Z-
dc.date.available2025-09-25T12:31:55Z-
dc.date.issued2023-08-02-
dc.identifier.citationROCHA, Danilo Massuia et al. Evolutionary features of microspore and pollen grain development in Cyperaceae. Plant Reproduction, [S.l.], v. 36, p. 333-342, 2023. DOI: https://doi.org/10.1007/s00497-023-00477-4. Disponível em: https://link.springer.com/article/10.1007/s00497-023-00477-4#article-info. Acesso em: 20 ago. 2025.pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/52508-
dc.language.isoengpt_BR
dc.publisherSpringer Naturept_BR
dc.rightsAcesso Restritopt_BR
dc.titleEvolutionary features of microspore and pollen grain development in Cyperaceaept_BR
dc.typeArtigopt_BR
dc.subject.keywordCyperaceaept_BR
dc.subject.keywordPlantas - filogeniapt_BR
dc.subject.keywordPlantas - desenvolvimentopt_BR
dc.identifier.doihttps://doi.org/10.1007/s00497-023-00477-4pt_BR
dc.relation.publisherversionhttps://link.springer.com/article/10.1007/s00497-023-00477-4#article-infopt_BR
dc.description.abstract1Cyperaceae members present atypical microsporogenesis, in which one meiotic product is functional while the other three degenerate, culminating in pseudomonad pollen formation. Differences during development, such as pseudomonad shape and degenerative microspore positioning, are seen throughout the family, but no phylogenetic interpretation has been made regarding these variances thus far. In this study, we analyzed the early- and late-diverging sedge genera Hypolytrum and Eleocharis, respectively, while comparing them to data available in the literature and conducting an ancestral character reconstruction for pseudomonad traits. Light microscopy results show that pseudomonad development in Hypolytrum is homologous to several other sedge genera, presenting apical degenerative microspores. However, pseudomonads are round and centrally arranged in the anther locule in this case, which consists of a pleisiomorphic trait for the family. The basal positioning of degenerative microspores is restricted to Rhynchospora, consisting of an apomorphic trait for this genus. Despite these differences, ultrastructural analysis of Eleocharis pseudomonad revealed shared features with other genera studied, which include variations in chromatin condensation and cytoplasmic turnover in functional cells. These common features seem related to the different cellular fates seen during microspore development and further corroborate the synapomorphic status of pseudomonads in sedges.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0059-7962pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1830-4929pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4148-3662pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2776-6781pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2442-2211pt_BR
dc.contributor.affiliationUniversidade Estadual de Londrina, Laboratório de Citogenética e Diversidade Vegetalpt_BR
dc.contributor.affiliationUniversidade de São Paulo, Faculdade de Filosofia Ciências e Letras de Ribeirao Pretopt_BR
dc.contributor.affiliationUniversidade de Brasília, Campus Universitário Darcy Ribeiro, Instituto de Ciências Biológicas, Departamento de Botânicapt_BR
dc.contributor.affiliationUniversidade Federal do Rio Grande do Sul, Instituto de Biociências, Departamento de Botânica, Laboratório de Anatomia Vegetalpt_BR
dc.contributor.affiliationUniversidade Estadual de Londrina, Laboratório de Citogenética e Diversidade Vegetalpt_BR
dc.description.unidadeInstituto de Ciências Biológicas (IB)pt_BR
dc.description.unidadeDepartamento de Botânica (IB BOT)pt_BR
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