Development and evolution of the gynoecium in Myrteae (Myrtaceae)

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dc.contributor.authorPimentel, Rafael R.
dc.contributor.authorBarreira, Natalia P.
dc.contributor.authorSpala, Diego P.
dc.contributor.authorCardim, Nathane B.
dc.contributor.authorSouza, Marcelo C.
dc.contributor.authorSa-Haiad, Barbara
dc.contributor.authorMachado, Silvia R. [UNESP]
dc.contributor.authorRocha, Joecildo F.
dc.contributor.authorSantiago-Fernandes, Lygia D. R.
dc.contributor.institutionUniversidade Federal do Rio de Janeiro (UFRJ)
dc.contributor.institutionUniv Fed Rural Rio de Janeiro
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:54:32Z
dc.date.available2015-03-18T15:54:32Z
dc.date.issued2014-01-01
dc.description.abstractCharacters of the gynoecium are considered potentially significant for the systematics of Myrtaceae. However, only two such characters - ovule number and placentation - have been addressed from an evolutionary perspective. Colleter presence in flowers is a synapomorphy of Myrtales; however, no morphological and histochemical descriptions of such structures have been done in Myrtaceae. Here we analysed the ontogeny and anatomy of the gynoecium combined with the ontogeny, anatomy, ultrastructure, and histochemistry of the colleters to study the evolution of these characters and map their states in the Myrteae phylogenetic tree. Our findings may help elucidate the evolutionary history of this tribe of fleshy-fruit producers so important towards maintaining ecological balance in the rainforest. Floral anatomy and ontogeny were analysed using light microscopy. Colleter samples were processed using standard methods for light and transmission electron microscopy. The main metabolites in colleters were detected via histochemistry. To map character states the program Mesquite version 2.71 was used. The morphological characters of the South American Myrteae here analysed provided an overview of the evolution of gynoecium - with cauline or carpellate placenta - and of colleters, as well as synapomorphies for the clades Plinia + Myrcia and Eugenia + Pimenta. The presence of two integuments in the ovules associated with sclereids and colleters in the gynoecium and the young fleshy fruit assures the efficient dispersal of their seeds. Our findings regarding gynoecium structural diversity of the tribe Myrteae give a new insight on their morphologically uniform flowers.en
dc.description.affiliationUniv Fed Rio de Janeiro, Museu Nacl, Dept Bot, BR-22940040 Rio De Janeiro, RJ, Brazil
dc.description.affiliationUniv Fed Rural Rio de Janeiro, Inst Biol, Dept Bot, BR-23851970 Seropedica, RJ, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-18618000 Botucatu, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipMinisterio da Ciencia e Tecnologia/Financiadora de Estudos e Projetos
dc.format.extent335-346
dc.identifierhttp://dx.doi.org/10.1071/BT14058
dc.identifier.citationAustralian Journal Of Botany. Collingwood: Csiro Publishing, v. 62, n. 4, p. 335-346, 2014.
dc.identifier.doi10.1071/BT14058
dc.identifier.issn0067-1924
dc.identifier.urihttp://hdl.handle.net/11449/116918
dc.identifier.wosWOS:000341588000007
dc.language.isoeng
dc.publisherCsiro Publishing
dc.relation.ispartofAustralian Journal Of Botany
dc.relation.ispartofjcr0.903
dc.relation.ispartofsjr0,393
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectantomyen
dc.subjectcolleteren
dc.subjecthistochemistryen
dc.subjectontogenyen
dc.subjectultrastructureen
dc.titleDevelopment and evolution of the gynoecium in Myrteae (Myrtaceae)en
dc.typeArtigo
dcterms.rightsHolderCsiro Publishing
unesp.author.orcid0000-0003-0425-4852[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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