Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)

Catasetum is a neotropical orchid genus of 130 species characterized by its unisexual flowers. They are pollinated by male Euglossini bees. It is widely know that these bees collect volatile compounds in Catasetum from structures called osmophores. However, there is little information on morpho-a...

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Autores principales: Franken, Evelyn P., Pansarin, Ludmila M., Pansarin, Emerson R.
Formato: Online
Idioma:spa
Publicado: Universidad de Costa Rica 2016
Acceso en línea:https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/26649
id LANKESTERIANA26649
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institution Universidad de Costa Rica
collection Lankesteriana: International Journal on Orchidology
language spa
format Online
author Franken, Evelyn P.
Pansarin, Ludmila M.
Pansarin, Emerson R.
spellingShingle Franken, Evelyn P.
Pansarin, Ludmila M.
Pansarin, Emerson R.
Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
author_facet Franken, Evelyn P.
Pansarin, Ludmila M.
Pansarin, Emerson R.
author_sort Franken, Evelyn P.
description Catasetum is a neotropical orchid genus of 130 species characterized by its unisexual flowers. They are pollinated by male Euglossini bees. It is widely know that these bees collect volatile compounds in Catasetum from structures called osmophores. However, there is little information on morpho-anatomy and histochemistry of secretory tissues for this neotropical genus and data are lacking. Based on these arguments members of the Catasetum cristatum alliance, namely C. arietinum, C. ariquemense, C. barbatum, C. carolinianum, C. cristatum, C. lanciferum, C. multifidum, C. multifissum, C. rivularium and C. semicirculatum were analyzed. The labellum of male flowers of this alliance is elongate and with fimbriate margins, possessing two protuberances and a median saccate portion. The labellum of female flowers is galeiform and there is no ornamentation. The entire adaxial surface of the labellum is secretory in both sexes, including the fimbriae of male flowers. The structure of the secretory tissue is similar among species, and they are composed of a simple epidermis and five layers of underlying parenchyma. In most species the epidermis is flat, and cells are elongated in the saccate portion. In C. ariquemense and C. carolinianum the epidermal cells are papilous, while in C. semicirculatum they have convex surface (male flowers). The histochemical analysis detected lipophilic droplets and starch grains inside the secretory cells. All characteristics observed are encountered in secretory tissues with high-energy demand, as is common in osmophores. 
title Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
title_short Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
title_full Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
title_fullStr Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
title_full_unstemmed Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
title_sort osmophore diversity in the catasetum cristatum lindl. alliance (orchidaceae: catasetinae)
title_alt Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae)
publisher Universidad de Costa Rica
publishDate 2016
url https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/26649
work_keys_str_mv AT frankenevelynp osmophorediversityinthecatasetumcristatumlindlallianceorchidaceaecatasetinae
AT pansarinludmilam osmophorediversityinthecatasetumcristatumlindlallianceorchidaceaecatasetinae
AT pansarinemersonr osmophorediversityinthecatasetumcristatumlindlallianceorchidaceaecatasetinae
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spelling LANKESTERIANA266492022-10-09T04:39:27Z Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae) Osmophore diversity in the Catasetum cristatum Lindl. alliance (Orchidaceae: Catasetinae) Franken, Evelyn P. Pansarin, Ludmila M. Pansarin, Emerson R. Euglossini bees floral glands flower reward pollination volatile compounds Euglossini bees floral glands flower reward pollination volatile compounds Catasetum is a neotropical orchid genus of 130 species characterized by its unisexual flowers. They are pollinated by male Euglossini bees. It is widely know that these bees collect volatile compounds in Catasetum from structures called osmophores. However, there is little information on morpho-anatomy and histochemistry of secretory tissues for this neotropical genus and data are lacking. Based on these arguments members of the Catasetum cristatum alliance, namely C. arietinum, C. ariquemense, C. barbatum, C. carolinianum, C. cristatum, C. lanciferum, C. multifidum, C. multifissum, C. rivularium and C. semicirculatum were analyzed. The labellum of male flowers of this alliance is elongate and with fimbriate margins, possessing two protuberances and a median saccate portion. The labellum of female flowers is galeiform and there is no ornamentation. The entire adaxial surface of the labellum is secretory in both sexes, including the fimbriae of male flowers. The structure of the secretory tissue is similar among species, and they are composed of a simple epidermis and five layers of underlying parenchyma. In most species the epidermis is flat, and cells are elongated in the saccate portion. In C. ariquemense and C. carolinianum the epidermal cells are papilous, while in C. semicirculatum they have convex surface (male flowers). The histochemical analysis detected lipophilic droplets and starch grains inside the secretory cells. All characteristics observed are encountered in secretory tissues with high-energy demand, as is common in osmophores.  Catasetum is a neotropical orchid genus of 130 species characterized by its unisexual flowers. They are pollinated by male Euglossini bees. It is widely know that these bees collect volatile compounds in Catasetum from structures called osmophores. However, there is little information on morpho-anatomy and histochemistry of secretory tissues for this neotropical genus and data are lacking. Based on these arguments members of the Catasetum cristatum alliance, namely C. arietinum, C. ariquemense, C. barbatum, C. carolinianum, C. cristatum, C. lanciferum, C. multifidum, C. multifissum, C. rivularium and C. semicirculatum were analyzed. The labellum of male flowers of this alliance is elongate and with fimbriate margins, possessing two protuberances and a median saccate portion. The labellum of female flowers is galeiform and there is no ornamentation. The entire adaxial surface of the labellum is secretory in both sexes, including the fimbriae of male flowers. The structure of the secretory tissue is similar among species, and they are composed of a simple epidermis and five layers of underlying parenchyma. In most species the epidermis is flat, and cells are elongated in the saccate portion. In C. ariquemense and C. carolinianum the epidermal cells are papilous, while in C. semicirculatum they have convex surface (male flowers). The histochemical analysis detected lipophilic droplets and starch grains inside the secretory cells. All characteristics observed are encountered in secretory tissues with high-energy demand, as is common in osmophores.  Universidad de Costa Rica 2016-10-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article application/pdf https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/26649 10.15517/lank.v16i3.26649 Lankesteriana: International Journal on Orchidology; 2016: Lankesteriana: Volumen 16, Número 3 Lankesteriana: International Journal on Orchidology; 2016: Lankesteriana: Volumen 16, Número 3 2215-2067 1409-3871 spa https://revistas.ucr.ac.cr/index.php/lankesteriana/article/view/26649/26846