Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities

Pedroso de Moraes, Cristiano; de Souza Leal, Thiago; Saoncella, Alinne L.; de Almeida, Marcílio

dc.creator	Pedroso de Moraes, Cristiano
dc.creator	de Souza Leal, Thiago
dc.creator	Saoncella, Alinne L.
dc.creator	de Almeida, Marcílio
dc.date	2016-04-13
dc.date.accessioned	2016-05-02T22:15:52Z
dc.date.available	2016-05-02T22:15:52Z
dc.identifier	http://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746
dc.identifier	10.15517/lank.v16i1.23746
dc.identifier.uri	https://hdl.handle.net/10669/21262
dc.description	To elucidate the factors which control the flower phenotypic plasticity of Catasetum fimbriatum, studies focusing the floral development of the species were performed. The treatments were: high light intensity (1613 μmol.m-2.s-1); low light intensity (454 μmol.m-2.s-1) and mean light intensity (827 μmol.m-2.s-1). The floral morphology and anatomy were analyzed to evaluate of the sequence of tissue development involved in the sexual differentiation. We found the presence of cell cluster with meristematic features in the ovaries and gynostemium of the male and female diclinous flowers. These are responsible for the definition of the sexual expression of the species, in the dependence of the environmental stimulus, related to the endogenous concentration of ethylene, allowing, consequently, the dedifferentiation and re-differentiation of those clusters in the sexual determination of the flowers. There were no anatomical differences in floral tissues in different treatments.	es-ES
dc.description	To elucidate the factors which control the flower phenotypic plasticity of Catasetum fimbriatum, studies focusing the floral development of the species were performed. The treatments were: high light intensity (1613 μmol.m-2.s-1); low light intensity (454 μmol.m-2.s-1) and mean light intensity (827 μmol.m-2.s-1). The floral morphology and anatomy were analyzed to evaluate of the sequence of tissue development involved in the sexual differentiation. We found the presence of cell cluster with meristematic features in the ovaries and gynostemium of the male and female diclinous flowers. These are responsible for the definition of the sexual expression of the species, in the dependence of the environmental stimulus, related to the endogenous concentration of ethylene, allowing, consequently, the dedifferentiation and re-differentiation of those clusters in the sexual determination of the flowers. There were no anatomical differences in floral tissues in different treatments.	en-US
dc.format	application/pdf
dc.language	spa
dc.publisher	Universidad de Costa Rica	es-ES
dc.relation	Lankesteriana;
dc.rights	Copyright (c) 2016 Lankesteriana	es-ES
dc.source	Lankesteriana; Early View. Lankesteriana: Volumen 16, Número 1	es-ES
dc.source	2215-2067
dc.source	1409-3871
dc.subject	Orchid	es-ES
dc.subject	sexual expression	es-ES
dc.subject	anatomy	es-ES
dc.subject	Orchid	en-US
dc.subject	sexual expression	en-US
dc.subject	anatomy	en-US
dc.title	Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities	es-ES
dc.title	Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities	en-US
dc.type	artículo original

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