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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.)

Occurrence of xyloglucan containing protuberances in the storage cell walls of cotyledons of Hymenaea courbaril L.

Full text
Author(s):
MARCO AURÉLIO SILVA TINÉ [1] ; ANGELO CORTELAZZO [2] ; MARCOS S. BUCKERIDGE [3]
Total Authors: 3
Affiliation:
[1] Instituto de Botânica. Seção de Fisiologia e Bioquímica de Plantas - Brasil
[2] UNICAMP. Instituto de Biologia. Departamento de Biologia Celular e Morfologia - Brasil
[3] Instituto de Botânica. Seção de Fisiologia e Bioquímica de Plantas - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Rev. bras. Bot.; v. 23, n. 4, p. 415-419, 2000-12-00.
Abstract

Despite the suggestions of its pectic composition, no clear evidence for this has been presented. Here we show the occurrence of such a structure in walls of cells from cotyledons of Hymenaea courbariI L. These cells are known to accumulate large amounts of storage xyloglucan in the wall and, in this case, the protuberances seem to contain this storage polysaccharide rather than pectin. A hypothetical sequence of events leading from wall strands to protuberances was assembled based on scanning electron microscopy observations. On this basis, a tentative model for how polysaccharides are distributed into the wall, near the regions where protuberances are found, is proposed to explain the presence of storage xyloglucan in their composition. (AU)

FAPESP's process: 98/05124-8 - Conservation and sustainable use of the plant biodiversity from the cerrado and Atlantic Forest: the storage of carbohydrates and their role on the adaptation and maintainance of plants in their natural environment
Grantee:Marcos Silveira Buckeridge
Support Opportunities: BIOTA-FAPESP Program - Thematic Grants