Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities
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 (8...
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| Formato: | Online |
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Universidad de Costa Rica
2016
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746 |
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LANKESTERIANA23746 |
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LANKESTERIANA237462022-10-09T05:14:19Z Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities 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 Orchid sexual expression anatomy Orchid sexual expression anatomy 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. 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. Universidad de Costa Rica 2016-04-13 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746 10.15517/lank.v16i1.23746 Lankesteriana: International Journal on Orchidology; 2016: Lankesteriana: Volumen 16, Número 1 Lankesteriana: International Journal on Orchidology; 2016: Lankesteriana: Volumen 16, Número 1 2215-2067 1409-3871 spa https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746/23967 |
| institution |
Universidad de Costa Rica |
| collection |
Lankesteriana: International Journal on Orchidology |
| language |
spa |
| format |
Online |
| author |
Pedroso-de-Moraes, Cristiano de Souza-Leal, Thiago Saoncella, Alinne L. de Almeida, Marcílio |
| spellingShingle |
Pedroso-de-Moraes, Cristiano de Souza-Leal, Thiago Saoncella, Alinne L. de Almeida, Marcílio Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| author_facet |
Pedroso-de-Moraes, Cristiano de Souza-Leal, Thiago Saoncella, Alinne L. de Almeida, Marcílio |
| author_sort |
Pedroso-de-Moraes, Cristiano |
| 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.
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| title |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| title_short |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| title_full |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| title_fullStr |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| title_full_unstemmed |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| title_sort |
floral sexual differentiation in catasetum fimbriatum (catasetinae, orchidaceae) exposed to different light intensities |
| title_alt |
Floral sexual differentiation in Catasetum fimbriatum (Catasetinae, Orchidaceae) exposed to different light intensities |
| publisher |
Universidad de Costa Rica |
| publishDate |
2016 |
| url |
https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/23746 |
| work_keys_str_mv |
AT pedrosodemoraescristiano floralsexualdifferentiationincatasetumfimbriatumcatasetinaeorchidaceaeexposedtodifferentlightintensities AT desouzalealthiago floralsexualdifferentiationincatasetumfimbriatumcatasetinaeorchidaceaeexposedtodifferentlightintensities AT saoncellaalinnel floralsexualdifferentiationincatasetumfimbriatumcatasetinaeorchidaceaeexposedtodifferentlightintensities AT dealmeidamarcilio floralsexualdifferentiationincatasetumfimbriatumcatasetinaeorchidaceaeexposedtodifferentlightintensities |
| _version_ |
1810112965360222208 |