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

Developmental and structural features of secretory canals in root and shoot wood of Copaifera langsdorffii Desf. (Leguminosae-Caesalpinioideae)

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Author(s):
Rodrigues, Tatiane Maria [1] ; Machado, Silvia Rodrigues [1]
Total Authors: 2
Affiliation:
[1] Sao Paulo State Univ, UNESP, Dept Bot, Biosci Inst Botucatu, BR-18618000 Sao Paulo - Brazil
Total Affiliations: 1
Document type: Journal article
Source: TREES-STRUCTURE AND FUNCTION; v. 23, n. 5, p. 1013-1018, OCT 2009.
Web of Science Citations: 11
Abstract

Copaifera langsdorffii Desf., popularly known as copaiba, is an oleoresin-producing tree has been over-exploited in Brazil by the pharmaceutical, cosmetic and varnish industries. Despite the long history of the use of this species, the structural knowledge on the resin-producing sites remains inadequate and is limited to the trunk. The aim of this study was to describe the origin, structure and developmental features of secretory spaces present in shoot and root wood of C. langsdorffii, based on the usual techniques of wood anatomy studies. Both root and shoot wood present secretory canals distributed along the marginal parenchyma bands which delimit growth layers. Secretory canals are constituted by a locally biseriate epithelium and lume that contains terpenes. They are arisen in the cambial zone from fusiform cambial initial cells and, eventually, ray initials. The origin of lumen is schizogenous. The epithelial cells have meristematic potential and are responsible for the locally biseriate epithelium. Mature secretory canals are wider and are separated between themselves only by a row of radial cells. The fusion of these adjacent secretory canals is frequent and results from the radial cell collapse. The finding of an interconnected system of resin canals in C. langsdorffii might be of value in terms of sustainable extraction of the resin and realistically assess its sustainable harvest potential. (AU)

FAPESP's process: 05/60086-0 - Secretory spaces in vegetative organs of two Leguminosae species in the cerrado: ontogenesis, structure and secretion
Grantee:Tatiane Maria Rodrigues
Support type: Scholarships in Brazil - Doctorate