Understanding the seedling development in sedge species (Cyperaceae, Poales) from micromorphological and anatomical perspectives

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dc.contributor.authorSilva, Lucimara Reis de Oliveira [UNESP]
dc.contributor.authorTrevisan, Rafael
dc.contributor.authorOriani, Aline [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-07-29T13:44:16Z
dc.date.available2023-07-29T13:44:16Z
dc.date.issued2023-04-01
dc.description.abstractConsidering the representativeness and morphological diversity of Cyperaceae in grassland ecosystems, this study aimed to understand the early seedling development in Cyperus sesquiflorus, Lagenocarpus minarum, and Rhynchospora rugosa based on micromorphological and anatomical analyses. One hundred diaspores of each species studied that were collected in natural environments were placed to germinate under controlled conditions and analyzed every 24 h for one month. Samples at different stages of post-seminal development were analyzed under scanning electron microscopy and light microscopy. The final germination percentage was 68%, 36%, and 31%, respectively. Rhynchospora rugosa had the longest mean germination time (17.68 ± 0.99 days). Germination begins with the protrusion of the embryonic axis followed by the coleoptile in L. minarum, whereas in C. sesquiflorus and R. rugosa the coleoptile is the first structure to appear, forming a tubular structure that involves the shoot apical meristem. The shoot and root apical meristems become well-differentiated only after the beginning of germination. The results suggest a correlation between the post-seminal development and the resting embryo morphology. Considering the phylogenetic position of Cyperaceae, Juncaceae, and Thurniaceae within the cyperid clade, the coleoptile is most likely the derived condition in the clade and led to greater protection of the shoot apical meristem and the first plumular leaves in relation to the phaneromeric cotyledon present in Thurniaceae and Juncaceae.en
dc.description.affiliationPrograma de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Departamento de Biodiversidade Instituto de Biociências UNESP - Universidade Estadual Paulista “Júlio de Mesquita Filho”, CP 199, Rio Claro13506-900, São Paulo
dc.description.affiliationDepartamento de Botânica Centro de Ciências Biológicas Universidade Federal de Santa Catarina (UFSC), Florianópolis 88040-900
dc.description.affiliationDepartamento de Ciências Biológicas Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ) Universidade de São Paulo, São Paulo
dc.description.affiliationUnespPrograma de Pós-Graduação em Ciências Biológicas (Biologia Vegetal) Departamento de Biodiversidade Instituto de Biociências UNESP - Universidade Estadual Paulista “Júlio de Mesquita Filho”, CP 199, Rio Claro13506-900, São Paulo
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.identifierhttp://dx.doi.org/10.1016/j.flora.2023.152238
dc.identifier.citationFlora: Morphology, Distribution, Functional Ecology of Plants, v. 301.
dc.identifier.doi10.1016/j.flora.2023.152238
dc.identifier.issn0367-2530
dc.identifier.scopus2-s2.0-85149222273
dc.identifier.urihttp://hdl.handle.net/11449/248448
dc.language.isoeng
dc.relation.ispartofFlora: Morphology, Distribution, Functional Ecology of Plants
dc.sourceScopus
dc.subjectColeoptile
dc.subjectCotyledon
dc.subjectCyperids
dc.subjectGermination
dc.subjectSeed
dc.subjectSeedling
dc.titleUnderstanding the seedling development in sedge species (Cyperaceae, Poales) from micromorphological and anatomical perspectivesen
dc.typeArtigo

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Artigos - Biologia - IBRC