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| DUARTE-ALMEIDA,JOAQUIM M.; CLEMENTE,MILENE S.; ARRUDA,ROSANI C.O.; VAZ,ANGELA M.S.F.; SALATINO,ANTONIO. |
| Large elongated glands occur on Cercideae leaf surfaces. Leaves of Bauhinia (55 taxa, 53 species), Cercis (1 species), Phanera (1 species), Piliostigma (2 species), Schnella (19 species) and Tylosema (1 species) were observed to determine location and relative number of glands. They were only observed on the abaxial leaf surface of 42 Bauhinia taxa. The glands were analyzed by light stereomicroscope and scanning electron microscopy. They are large (up to 270 µm long and 115 µm wide) and multicellular, containing lipophilic substances, probably volatile oils. Presence or absence and density of the glands in species of Bauhinia may be useful to determine species delimitation or distinction among infraspecific taxa. Higher density of glands is more common in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bauhinia; Brazilian forest; Leguminosae; Secretory structure; Taxonomy; Tropical ecosystems. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200787 |
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| Jezler,Caroline Nery; Batista,Ricardo Silva; Alves,Péricles Barreto; Silva,Delmira da Costa; Costa,Larissa Corrêa do Bomfim. |
| Alpinia zerumbet is a medicinal plant from Asian origin used in folk medicine for the treatment of hypertension, which effect is attributed to terpinen-4-ol, the major component of the essential oil. The objective of this work was to identify the essential oil secretory structures in the leaf, flower, root and rhizome of this plant, and analyze the content and the chemical composition of the oil in the different organs of the plant. Sections were subjected to histochemical test with Nadi reagent for in situ localization of secretion. The essential oil extraction was performed by hydrodistillation in a Clevenger apparatus and the compounds were identified in CG-EM/FID. The histochemical test was positive for terpenoids, confirming the presence of essential... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Medicinal plant; Terpinen-4-ol; Secretory structure. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001000013 |
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| FERNANDES,YANNE S.; TRINDADE,LUMA M.P.; REZENDE,MARIA HELENA; PAULA,JOSÉ R.; GONÇALVES,LETÍCIA A.. |
| Trichogonia cinerea is endemic to Brazil and occurs in areas of cerrado and campo rupestre. In this study, we characterized the glandular and non-glandular trichomes on the aerial parts of this species, determined the principal events in the development of the former, and identified the main constituents of the volatile oil produced in its aerial organs. Fully expanded leaves, internodes, florets, involucral bracts, and stem apices were used for the characterization of trichomes. Leaves, internodes, florets, and involucral bracts were examined by light microscopy and scanning electron microscopy, whereas stem apices were examined only by light microscopy. Branches in the reproductive phase were used for the extraction and determination of the composition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volatile oil; Histochemistry; Ontogeny; Secretory structure. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000100309 |
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