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dc.contributor.authorRudall, Paula J.
dc.contributor.authorAlves, Marccus
dc.contributor.authorSajo, Maria das Gracas [UNESP]
dc.date.accessioned2018-11-27T10:20:23Z
dc.date.available2018-11-27T10:20:23Z
dc.date.issued2016-02-04
dc.identifierhttp://dx.doi.org/10.7717/peerj.1653
dc.identifier.citationPeerj. London: Peerj Inc, v. 4, 25 p., 2016.
dc.identifier.issn2167-8359
dc.identifier.urihttp://hdl.handle.net/11449/165079
dc.description.abstractBackground and Aims. A recently described Brazilian species, Lacandonia brasiliana, shares with its longer established putative sister species from Mexico, L. schismatica, inverted floral patterning (carpels surrounding stamens) that is almost unique among angiosperms. We present a detailed ontogenetic study of L. brasiliana for comparison with other members of the tribe Triurideae (Triuridaceae) to explore the possible evolutionary origins of inside-out'' flowers. Methods. Wild-source populations of L. brasiliana were compared morphologically and ontogenetically with related species of Triurideae, using light and scanning electron microscopy. Key Results. Relatively few morphological differences separate flowers of L. brasiliana and L. schismatica. Both species have tepals with late-developing subapical appendages. In both species, the three central (almost sessile) anthers develop precociously with respect to the carpels; the anthers remain closed, and fertilization is achieved via pollen-tube growth from germinating pollen grains of the same cleistogamous flower. Carpels are initiated on fascicles. Conclusions. The close similarity between the two Lacandonia species makes it unlikely that they arose independently from two separate homeotic transformation events; they could either represent sister species or two populations of a single disjunct species. Our study underlines the problematic generic and species boundaries within Triurideae. We present an evolutionary scenario of character evolution in Triuridaceae. The inside-out Lacandonia flower could have resulted from a stabilized homeotic transformation; this hypothesis is not in conflict with constrasting theories of the origin of the Triuridaceae flower, which coincided with a shift to unisexuality. The unisexual yet highly plastic flowers that are typical of Triuridaceae could have pre-adapted the origin of the extraordinary Lacandonia morphology.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent25
dc.language.isoeng
dc.publisherPeerj Inc
dc.relation.ispartofPeerj
dc.sourceWeb of Science
dc.subjectLacandonia
dc.subjectEvolutionary transformation
dc.subjectInside-out flowers
dc.subjectMycoheterotrophs
dc.subjectUnisexuality
dc.subjectTriuridaceae
dc.subjectPandanales
dc.titleInside-out flowers of Lacandonia brasiliana (Triuridaceae) provide new insights into fundamental aspects of floral patterningen
dc.typeArtigo
dcterms.rightsHolderPeerj Inc
dc.contributor.institutionRoyal Bot Gardens
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationRoyal Bot Gardens, Comparat Plant & Fungal Biol, Richmond, Surrey, England
dc.description.affiliationUniv Fed Pernambuco, Dept Bot, Recife, PE, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Sao Paulo, Brazil
dc.identifier.doi10.7717/peerj.1653
dc.identifier.wosWOS:000370933200007
dc.rights.accessRightsAcesso aberto
dc.identifier.fileWOS000370933200007.pdf
dc.identifier.lattes2126319926799273
unesp.author.lattes2126319926799273
dc.relation.ispartofsjr1,087
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