Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)
The structure of the osmophores in Stanhopea graveolens and Cycnoches chlorochilon was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The scent glands are located in the basal part of the labellum. The surface of the osmophor...
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| Format: | Article |
| Language: | English |
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Polish Botanical Society
2012-12-01
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| Series: | Acta Agrobotanica |
| Subjects: | |
| Online Access: | https://pbsociety.org.pl/journals/index.php/aa/article/view/1301 |
| _version_ | 1819041981551083520 |
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| author | Sebastian Antoń Magdalena Kamińska Małgorzata Stpiczyńska |
| author_facet | Sebastian Antoń Magdalena Kamińska Małgorzata Stpiczyńska |
| author_sort | Sebastian Antoń |
| collection | DOAJ |
| description | The structure of the osmophores in Stanhopea graveolens and Cycnoches chlorochilon was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The scent glands are located in the basal part of the labellum. The surface of the osmophores is wrinkled or rugose, which increases the area of fragrance emission. On the surface of the epidermis, remnants of secretion are noticeable in S. graveolens, but these are absent in C. chlorochilon. The osmophore tissue is composed of secretory epidermal cells and several layers of subepidermal parenchyma, and it is supplied by vascular bundles that run in ground parenchyma. The secretory cells have large nuclei, a dense cytoplasm with numerous ER profiles, lipid droplets, and plastids with a substantial amount of starch, which are probably involved in the synthesis of volatile substances. In the cell walls of the osmophore cells, numerous pits with plasmodesmata occur that are likely to take part in symplastic transport of the scent compounds. The structure of the osmophores is similar in both investigated species. Both S. graveolens and C. chlorochilon are pollinated by euglossine bees, and such similarity results from adaptation to effective scent emission and attraction of pollinators. |
| first_indexed | 2024-12-21T09:33:38Z |
| format | Article |
| id | doaj.art-8e0ecbf430df45c5b718f5492e0c2ecf |
| institution | Directory Open Access Journal |
| issn | 2300-357X |
| language | English |
| last_indexed | 2024-12-21T09:33:38Z |
| publishDate | 2012-12-01 |
| publisher | Polish Botanical Society |
| record_format | Article |
| series | Acta Agrobotanica |
| spelling | doaj.art-8e0ecbf430df45c5b718f5492e0c2ecf2022-12-21T19:08:41ZengPolish Botanical SocietyActa Agrobotanica2300-357X2012-12-01652112210.5586/aa.2012.054994Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae)Sebastian Antoń0Magdalena Kamińska1Małgorzata Stpiczyńska2University of Life Sciences in LublinUniversity of Life Sciences in LublinUniversity of Life Sciences in Lublin; University of WarsawThe structure of the osmophores in Stanhopea graveolens and Cycnoches chlorochilon was studied by means of light microscopy (LM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The scent glands are located in the basal part of the labellum. The surface of the osmophores is wrinkled or rugose, which increases the area of fragrance emission. On the surface of the epidermis, remnants of secretion are noticeable in S. graveolens, but these are absent in C. chlorochilon. The osmophore tissue is composed of secretory epidermal cells and several layers of subepidermal parenchyma, and it is supplied by vascular bundles that run in ground parenchyma. The secretory cells have large nuclei, a dense cytoplasm with numerous ER profiles, lipid droplets, and plastids with a substantial amount of starch, which are probably involved in the synthesis of volatile substances. In the cell walls of the osmophore cells, numerous pits with plasmodesmata occur that are likely to take part in symplastic transport of the scent compounds. The structure of the osmophores is similar in both investigated species. Both S. graveolens and C. chlorochilon are pollinated by euglossine bees, and such similarity results from adaptation to effective scent emission and attraction of pollinators.https://pbsociety.org.pl/journals/index.php/aa/article/view/1301micromorphologyultrastructurehistochemistrysecretory tissuescent glandsStanhopeaCycnochesEpidendroideae |
| spellingShingle | Sebastian Antoń Magdalena Kamińska Małgorzata Stpiczyńska Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) Acta Agrobotanica micromorphology ultrastructure histochemistry secretory tissue scent glands Stanhopea Cycnoches Epidendroideae |
| title | Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) |
| title_full | Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) |
| title_fullStr | Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) |
| title_full_unstemmed | Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) |
| title_short | Comparative structure of the osmophores in the flowers of Stanhopea graveolens Lindley and Cycnoches chlorochilon Klotzsch (Orchidaceae) |
| title_sort | comparative structure of the osmophores in the flowers of stanhopea graveolens lindley and cycnoches chlorochilon klotzsch orchidaceae |
| topic | micromorphology ultrastructure histochemistry secretory tissue scent glands Stanhopea Cycnoches Epidendroideae |
| url | https://pbsociety.org.pl/journals/index.php/aa/article/view/1301 |
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