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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mucilage-secreting structures of Hibiscus pernambucensis Arruda (Malvaceae): distribution, morphoanatomical and histochemical characterization

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Author(s):
Joecildo Francisco Rocha [1] ; Rafael Ribeiro Pimentel [2] ; Silvia Rodrigues Machado [3]
Total Authors: 3
Affiliation:
[1] Universidade Federal Rural do Rio de Janeiro. Instituto de Biologia. Departamento de Botânica - Brasil
[2] Universidade Federal do Rio de Janeiro. Museu Nacional, Horto Botânico. Programa de Pós-Graduação em Ciências Biológicas - Brasil
[3] Universidade Estadual Paulista. Instituto de Biociências. Departamento de Botânica - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Acta Botanica Brasilica; v. 25, n. 4, p. 751-763, 2011-12-00.
Abstract

This work studied the mucilage-secreting structures of Hibiscus pernambucensis using light and scanning electron microscopy. Known as guaxima-do-mangue, algodão-do-brejo and embira-do-mangue, this species is a native shrub that occurs in mangrove and restinga along the Brazilian coast, and is important in the production of textile fibers and cellulose, provides abundant mucilage that is used medicinally like other Malvaceae species, and has tannins. The results of this work found colleters, pearl glands, long-stalked secretory trichomes, ducts, cavities and idioblasts. The colleters occur on the shoot apices, stipules, leaf primordia, leaves, young sepals and petals. The pearl glands are present in the adaxial and abaxial surface of the leaf primordia. The ducts and the cavities occur in the vegetative and reproductive shoot apices. The idioblasts occur in the roots, both in primary and secondary stages of development, and in the leaf mesophyll. The secretion of the different secretory structures is made predominantly of acids and neutral polysaccharides, proteins, lipids and phenolic substances. The presence of external and internal mucilage-secreting structures in all plant organs, at different stages of development, represents an important adaptive mechanism to restinga and mangrove environments. (AU)

FAPESP's process: 00/12469-3 - Morphological, anatomical, histochemical, and ultrastructural studies of cerrado plants (sensu lato) of São Paulo State
Grantee:Silvia Rodrigues Machado
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants