Morphology and development of anthers and ovules in Croton and Astraea (Euphorbiaceae)

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dc.contributor.authorDe-Paula, Orlando Cavalari
dc.contributor.authorSajo, Maria das Gracas [UNESP]
dc.contributor.institutionUniversidade Federal de Minas Gerais (UFMG)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T18:48:06Z
dc.date.accessioned2014-05-20T13:57:10Z
dc.date.available2013-09-30T18:48:06Z
dc.date.available2014-05-20T13:57:10Z
dc.date.issued2011-01-01
dc.description.abstractWe examined the embryological development of anthers and ovules from Astraea (A. lobata and A. praetervisa) and Croton (C. floribundus, C. fuscescens, C. glandulosus, C. lundianus, C. piptocalyx, C. urucurana and C. triqueter) focusing on features with systematic significance for the group. Some of these features are common in Euphorbiaceae including: a dicotyledonous type of anther wall formation, a secretory tapetum, a mixed origin of the outer ovule integument, an epidermal origin of the inner ovule integument, the occurrence of many archesporial cells inside the ovules and a megagametophyte of the Polygonum-type. Other features, such as the presence of styloid crystals in the tapetum, an idioblast with a druse in the endothecium, simultaneous and successive microsporogenesis, and a functional micropylar megaspore, have not previously been reported in the family. These characters appear to distinguish Croton and Astraea from other Euphorbiaceae and possibly represents autapomorphies for the tribe Crotoneae.en
dc.description.affiliationUniversidade Federal de Minas Gerais (UFMG), ICB, Dept Bot, BR-31270901 Belo Horizonte, MG, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Bot, IB, BR-13506900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Bot, IB, BR-13506900 São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 06/61641-0
dc.format.extent505-511
dc.identifierhttp://dx.doi.org/10.1111/j.1756-1051.2011.01072.x
dc.identifier.citationNordic Journal of Botany. Malden: Wiley-blackwell, v. 29, n. 4, p. 505-511, 2011.
dc.identifier.doi10.1111/j.1756-1051.2011.01072.x
dc.identifier.issn0107-055X
dc.identifier.lattes2126319926799273
dc.identifier.urihttp://hdl.handle.net/11449/20394
dc.identifier.wosWOS:000294824400024
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofNordic Journal of Botany
dc.relation.ispartofjcr0.846
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleMorphology and development of anthers and ovules in Croton and Astraea (Euphorbiaceae)en
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
unesp.author.lattes2126319926799273
unesp.author.orcid0000-0002-8089-2082[1]
unesp.author.orcid0000-0003-4642-8769[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt

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