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MILANI, J.F. Secretory cavities in the aerial vegetative organs of Copaifera trapezifolia Hayne (Leguminosae, Caesalpinioideae). 2010. 61 f. Dissertation (Master). Faculdade de Ciências Farmacêuticas de Ribeirão Preto – Universidade de São Paulo, Ribeirão Preto, 2009. Copaíbas (Leguminosae, Caesalpinioideae) are best known for the production of an oilresin with anti-inflammatory properties, used in the folk medicine and pharmaceutical industry. The substance is usually taken from the stem, through the use of an auger to drill the stem until the oilresin drips. This oilresin seems to be produced, stored and secreted by two types of secretory structures, canals and secretory cavities. Although many studies address the chemical analysis and the biological activity of the oilresin in species of Copaifera, the cellular mechanisms of production, storage and secretion have rarely been exploited. The objective of this study was to compare the distribution, morphology, development and secretion biology of oilresin-secreting canals and/or cavities, in the stem and in the leaf of Copaifera trapezifolia Hayne, unique among the 35 species of the genus that occurs in the Atlantic Rain Forest. The study tested wheather canals and/or cavities produce oilresin in the leaf, as reported to the stem, in order to propose alternatives to the use of the trunk of the tree as a source of secretion. Considering that the chemical nature of the secretion is already known to the stem, the ultrastructural study of canal/cavity in several stages of development aim at to associate subcellular components with substances produced and secreted. Data obtained can increase the knowledge on the production and secretion mechanisms of within epithelial cells of secretory canals and/or cavities. Materials include axillary buds containing leaf and stem primordial, besides mature middle leaflets and portions of stem in primary and secondary growth. They were collected from three individuals in the Botanic Garden of Rio de Janeiro and prepared to be employed in anatomy, histolocalization of oilresin, ultrastructure and clearing of whole leaves. Secretory cavities were observed in the leaf and the stem (primary and secondary growth), between the palisade and spongy mesophyll, petiole cortex, and shoot cortex and pith. Cavities originate from ground meristem cells by a periclinal division followed by two anticlinals; the lumen is formed

Cavidades secretoras nos órgãos vegetativos aéreos de Copaifera trapezifolia Hayne (Leguminosae, Caesalpinoideae)