Composition, structure and phylogenetic implications of the cell wall in pteridophytes

• Grant number: 06/07292-3
• Support Opportunities: Regular Research Grants
• Start date: May 01, 2007
• End date: October 31, 2009
• Field of knowledge: Biological Sciences - Botany
• Principal Investigator: Marcos Silveira Buckeridge
• Grantee: Marcos Silveira Buckeridge
• Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

In previous studies (MSc thesis financed by FAPESP) we focused the composition of the cell walls of 11 species of Pteridophytes, chosen according to the current knownledge about their phylogeny, which is based on morphological and molecular data. Our results suggest that there are two groups, one in which xyloglucan predominate and another where galactomannans are the main hemicellulosic polysaccharides. In the present proposal, we aim to advance our studies, extending our analyses to up to 100 species with the goal of understanding the evolution of hemicelluloses in Pteridophytes. To reach this goal, we will use techniques to analyse hemiceluloses directly through specific enzymatic hydrolysis and subsequent analyses of the fragments by mass spectrometry Maldi-TOF (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILVA, GIOVANNA B.; IONASHIRO, MARI; CARRARA, THALITA B.; CRIVELLARI, AUGUSTO C.; TINE, MARCO A. S.; PRADO, JEFFERSON; CARPITA, NICHOLAS C.; BUCKERIDGE, MARCOS S.. Cell wall polysaccharides from fern leaves: Evidence for a mannan-rich Type III cell wall in Adiantum raddianum. Phytochemistry, v. 72, n. 18, p. 2352-2360, DEC 2011. (06/07292-3)