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dc.contributor.authorDelgado, Marina Neves
dc.contributor.authorBao, Sonia Nair
dc.contributor.authorAmaral, Lourdes I. V.
dc.contributor.authorRossatto, Davi Rodrigo [UNESP]
dc.contributor.authorMorais, Helena Castanheira de
dc.date.accessioned2015-11-03T15:30:11Z
dc.date.available2015-11-03T15:30:11Z
dc.date.issued2014-12-01
dc.identifier.citationBrazilian Journal Of Botany. Sao Paulo: Soc Botanica Sao Paulo, v. 37, n. 4, p. 495-504, 2014.
dc.identifier.issn1806-9959
dc.identifier.urihttp://hdl.handle.net/11449/130199
dc.description.abstractThis study aimed to elucidate the anatomy and morphology of extrafloral nectaries (EFNs) in Maprounea brasiliensis and whether environmental factors influence their traits of production and morphology. For this reason, we sampled leaves from individuals subjected to distinct fire and water regimes, and the anatomy and ultrastructures of EFNs as well as the chemical constitution of nectar were analyzed. EFN nectar production was associated with immature and recently expanded leaves. EFNs originate from the epidermis. At the end of ontogeny, secretory cells are surrounded by three or more layers of cells with secondary and lignified walls, isolating the EFN of vascular tissue. The ultrastructural analysis revealed mature EFNs with secretory activity. The experiments showed that EFN production was not influenced by the presence of frequent fires. However, during the rainy season, new produced leaves had nectaries in greater quantity and diameter than leaves produced during the dry season. The anatomical and ultrastructural changes demonstrated that nectar production is strongly influenced by the age of the nectaries which influence ant attendance to EFN since no ants were observed on leaves that did not secrete nectar. The seasonality experiment confirmed that EFNs of M. brasiliensis are resource dependent and evolutionary programed to appear in elevated number during the rainy season.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFINEP
dc.description.sponsorshipFAPDF
dc.format.extent495-504
dc.language.isoeng
dc.publisherSoc Botanica Sao Paulo
dc.relation.ispartofBrazilian Journal Of Botany
dc.sourceWeb of Science
dc.subjectAnatomyen
dc.subjectFrequent fireen
dc.subjectNectaren
dc.subjectSeasonality effectsen
dc.subjectUltrastructureen
dc.titleExtrafloral nectary morphology and the role of environmental constraints in shaping its traits in a common Cerrado shrub (Maprounea brasiliensis A. St.-Hill: Euphorbiaceae)en
dc.typeArtigo
dcterms.rightsHolderSoc Botanica Sao Paulo
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.contributor.institutionInstituto Federal de Brasília
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationInstituto de Ciências Bioloógicas, Universidade de Brasília, Brasília, DF, Brasil
dc.description.affiliationDepartamento de Agroecologia, Instituto Federal de Brasília, Câmpus Planaltina, Planaltina, DF, Brasil
dc.description.affiliationDepartamento de Biologia Celular, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brasil
dc.description.affiliationDepartamento de Botânica, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brasil
dc.description.affiliationDepartamento de Biologia Aplicada, FCAV, UNESP-Universidade Estadual Paulista, Jaboticabal, SP, Brasil
dc.description.affiliationDepartamento de Ecologia, Instituto de Ciências Biológicas, Universidade de Brasília, Brasília, DF, Brasil
dc.description.affiliationUnespDepartamento de Biologia Aplicada, FCAV, UNESP-Universidade Estadual Paulista, Jaboticabal, SP, Brasil
dc.identifier.doi10.1007/s40415-014-0062-5
dc.identifier.wosWOS:000346921400015
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
dc.identifier.lattes0588666172501665
unesp.author.lattes0588666172501665
unesp.author.orcid0000-0001-9510-8345[4]
dc.relation.ispartofjcr0.779
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