ANATOMICAL CHARACTERIZATION AND MICROCHEMISTRY OF VISMIA GUIANENSIS (AUBL.) CHOISY (CLUSIACEAE) BLADE LEAFAbstract
Vismia guianensis (Aubl.) Choisy is a tree that belongs to the secondary vegetation in rainforests. This study aimed to perform anatomy analysis by light microscopy; scanning and microchemistry of the leaves of V. guianensis. Tri stratified upper epidermis with intense cutinization and unistratified inferior epidermis was observed. The stomata found are paracytic and the trichomes arranged in rosettes are glandular, multicellular, stellate shape covered with cuticle, which were present on the abaxial surface. Parenchyma cells with idioblasts containing druses of calcium oxalate crystals were also found. The mesophyll is dorsiventral and the midrib is concave on the adaxial surface and convex on the opposite surface. The microchemical tests detected the presence of starch grains in the chlorophyll cells and phenolic compounds dispersed in the palisade tissue and abaxial surface. Alkaloids in the epidermis and in the sclerenchyma cells surrounding the vascular bundles and the midrib xylem, dispersed flavonoid in the palisade parenchyma and trichomes, fatty substances as content of the secretory ducts and reducing sugars in the palisade and epidermal cells were found. These anatomical features were fundamental in the identification and characterization of the species.
Sarah Regina Pereira Camelo , Russany Silva Costa , Janaina Gell de Pontes Vieira , Roseane Maria Ribeiro-Costa , Wagner Luiz Ramos Barbosa , Flavio Vasconcelos , Jose Otavio Carrera Silva Junior*
Adj. Prof., Laboratory of Pharmaceutical Technology, School of Pharmacy, Institute of Health Sciences, Federal University of Para, University City “Jose da Silveira Netto”, CEP 66075-110, Belem, Para, Brazil
17 January, 2012
27 February, 2012
21 April, 2012
01 May, 2012