Morfoanatomia e histoquímica de Brosimum gaudichaudii Trécul (Moraceae)
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Data
2007-09-01
Autores
Jacomassi, Ezilda
Moscheta, Ismar Sebastião
Machado, Sílvia Rodrigues [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Botânica do Brasil
Resumo
Brosimum gaudichaudii, conhecida como mamacadela, é espécie comum nos cerrados, com grande valor na medicina popular e na indústria de medicamentos. A casca da raiz e do caule é empregada no tratamento do vitiligo, sendo o bergapteno e psoraleno, duas furanocumarinas, responsáveis pela ação farmacológica. Neste trabalho são apresentadas a caracterização morfoanatômica e a histoquímica de órgãos vegetativos de B. gaudichaudii, com informações sobre o embrião e o desenvolvimento pós-seminal. Amostras foram processadas segundo técnicas usuais em anatomia e ultra-estrutura vegetal. O embrião é do tipo total e invaginado, a plântula cripto-hipogéia e o sistema radicular do tirodendro é composto por raiz primária pouco desenvolvida em relação às raízes laterais. Plantas adultas apresentam raízes gemíferas longas, plagiotrópicas originando ramos caulinares aéreos; tais raízes possuem periderme com súber desenvolvido e floema secundário abundante em relação ao xilema, sendo facilmente destacados quando manipulados. O caule jovem e a folha apresentam epiderme unisseriada, grande densidade de tricomas tectores unicelulares e tricomas glandulares. Laticíferos não-articulados ramificados ocorrem em todos os órgãos, podendo invadir os elementos de vaso. Idioblastos fenólicos ocorrem em abundância em todos tecidos e órgãos analisados. O valor das características anatômicas observadas no controle de qualidade da droga é discutido.
Brosimum gaudichaudii known as mamacadela is a common cerrado species with a great importance on medicine folk and in the pharmaceutical industry. The bark of the root and stem is used on the treatment of vitiligo being the bergapten and psoralen two furocoumarins responsible for pharmacological activity. This work presents the morphoanatomical and histochemical characterization of the vegetative organs of B. gaudichaudii, with information about its embryo and post-seminal development. Samples were processed by usual techniques of plant anatomy and ultra-structure. The embryo is of the total type and invaginate, the seedling is crypto-hypogeal and the tirodentro's radicular system is composed by primary root that is not always well developed when compared to other roots that probably are derived of the hypocotyl which have greater size. The adult plants present long shoot bud-forming roots and plagiotropics origining with air branch. These roots present a periderm with developed phellem and secondary phloem more developed than xylem, being both easily eminent when manipulated. The stem and the leaf show unisseriate epidermis with a high density of unicellular non-glandular trichomes and glandular trichomes. The laticiferous are branched and non-articulate, occurring at all organs mostly frequently inside of the vessel elements. Phenolic-idioblasts occur abundantly at all organs.
Brosimum gaudichaudii known as mamacadela is a common cerrado species with a great importance on medicine folk and in the pharmaceutical industry. The bark of the root and stem is used on the treatment of vitiligo being the bergapten and psoralen two furocoumarins responsible for pharmacological activity. This work presents the morphoanatomical and histochemical characterization of the vegetative organs of B. gaudichaudii, with information about its embryo and post-seminal development. Samples were processed by usual techniques of plant anatomy and ultra-structure. The embryo is of the total type and invaginate, the seedling is crypto-hypogeal and the tirodentro's radicular system is composed by primary root that is not always well developed when compared to other roots that probably are derived of the hypocotyl which have greater size. The adult plants present long shoot bud-forming roots and plagiotropics origining with air branch. These roots present a periderm with developed phellem and secondary phloem more developed than xylem, being both easily eminent when manipulated. The stem and the leaf show unisseriate epidermis with a high density of unicellular non-glandular trichomes and glandular trichomes. The laticiferous are branched and non-articulate, occurring at all organs mostly frequently inside of the vessel elements. Phenolic-idioblasts occur abundantly at all organs.
Descrição
Palavras-chave
Brosimum gaudichaudii, idioblastos fenólicos, laticíferos, mamacadela, raízes gemíferas, Brosimum gaudichaudii, phenolic-idioblasts, laticifers, mamacadela, root
Como citar
Acta Botanica Brasilica. Sociedade Botânica do Brasil, v. 21, n. 3, p. 575-597, 2007.