Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)

Species of Brunfelsia, whose flowers change colour progressively from violet to white, are popularly known as yesterday-today-tomorrow and used in folk medicine, mainly as anesthetic and diuretic. Based on ethnobotanical surveys, they have been investigated chemically and pharmacologically for expan...

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Detalles Bibliográficos
Autores principales: Duarte, Márcia do Rocio, Wolf, Samantha
Formato: Articulo Comunicacion
Lenguaje:Inglés
Publicado: 2010
Materias:
Farmacia
bicollateral bundle; Brunfelsia pilosa; calcium oxalate crystal; solanaceae; trichomes; yesterday-today-tomorrow
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/8059
http://www.latamjpharm.org/resumenes/29/7/LAJOP_29_7_2_9.pdf
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-8059
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Farmacia
bicollateral bundle; Brunfelsia pilosa; calcium oxalate crystal; solanaceae; trichomes; yesterday-today-tomorrow
spellingShingle Farmacia
bicollateral bundle; Brunfelsia pilosa; calcium oxalate crystal; solanaceae; trichomes; yesterday-today-tomorrow
Duarte, Márcia do Rocio
Wolf, Samantha
Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
topic_facet Farmacia
bicollateral bundle; Brunfelsia pilosa; calcium oxalate crystal; solanaceae; trichomes; yesterday-today-tomorrow
description Species of Brunfelsia, whose flowers change colour progressively from violet to white, are popularly known as yesterday-today-tomorrow and used in folk medicine, mainly as anesthetic and diuretic. Based on ethnobotanical surveys, they have been investigated chemically and pharmacologically for expanding the knowledge on the native medicinal flora and for searching bioactive compounds. In order to contribute to pharmacognostic analyses, especially in distinguishing the species B. pilosa Plowman from the allied B. uniflora (Pohl) D. Don, this work has aimed to study the microscopic characters of the leaf and stem of the former. Mature leaves and young stem fragments were fixed in FAA, freehand sectioned transverse and longitudinally, and stained with astra blue and basic fuchsine. Microchemical tests and scanning electron analysis were also performed. The leaf is hypostomatic, having predominantly paracytic stomata. Multicellular non-glandular trichomes and capitate glandular ones are found on both surfaces. The mesophyll is dorsiventral and the midrib is traversed by a bicollateral vascular bundle in open arc. The stem, in incipient secondary growth, shows a uniseriate epidermis and the phellogen is formed in the sub-epidermal layers. The cortex has angular collenchyma, chlorenchyma and a starch sheath, and the vascular system shows external and internal phloem. Crystals of calcium oxalate are seen in the leaf and stem.
format Articulo
Comunicacion
author Duarte, Márcia do Rocio
Wolf, Samantha
author_facet Duarte, Márcia do Rocio
Wolf, Samantha
author_sort Duarte, Márcia do Rocio
title Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
title_short Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
title_full Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
title_fullStr Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
title_full_unstemmed Microscopic characters of the leaf and stem of Brunfelsia pilosa Plowman (solanaceae)
title_sort microscopic characters of the leaf and stem of brunfelsia pilosa plowman (solanaceae)
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/8059
http://www.latamjpharm.org/resumenes/29/7/LAJOP_29_7_2_9.pdf
work_keys_str_mv AT duartemarciadorocio microscopiccharactersoftheleafandstemofbrunfelsiapilosaplowmansolanaceae
AT wolfsamantha microscopiccharactersoftheleafandstemofbrunfelsiapilosaplowmansolanaceae
bdutipo_str Repositorios
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