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Title: How cell wall complexity influences saccharification efficiency in Miscanthus sinensis

The production of bioenergy from grasses has been developing quickly during the last decade, with Miscanthus being among the most important choices for production of bioethanol. However, one of the key barriers to producing bioethanol is the lack of information about cell wall structure. Cell walls are thought to display compositional differences that lead to emergence of a very high level of complexity, resulting in great diversity in cell wall architectures. In this work, a set of different techniques was used to access the complexity of cell walls of different genotypes of Miscanthus sinensis in order to understand how they interfere with saccharification efficiency. Three genotypes of M. sinensis displaying different patterns of correlation between lignin content and saccharification efficiency were subjected to cell wall analysis by quantitative/qualitative analytical techniques such as monosaccharide composition, oligosaccharide profiling, and glycome profiling. When saccharification efficiency was correlated negatively with lignin, the structural features of arabinoxylan and xyloglucan were found to contribute positively to hydrolysis. In the absence of such correlation, different types of pectins, and some mannans contributed to saccharification efficiency. In conclusion, different genotypes of M. sinensis were shown to display distinct interactions among their cell wall components, which seem to influencemore » cell wall hydrolysis.« less
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [3] ;  [2] ;  [1]
  1. Univ. of Sao Paulo (Brazil). Lab. of Plant Physiological Ecology (LAFIECO), Dept. of Botany, Inst. of Biosciences
  2. Wageningen Univ. and Research Centre, Wageningen (The Netherlands)
  3. Univ. of Georgia, Athens, GA (United States). BioEnergy Science Center, Complex Carbohydrate Research Center
Publication Date:
OSTI Identifier:
1343099
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Journal of Experimental Botany
Additional Journal Information:
Journal Volume: 66; Journal Issue: 14; Journal ID: ISSN 0022-0957
Publisher:
Oxford University Press
Research Org:
Univ. of Georgia, Athens, GA (United States). BioEnergy Science Center
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; Bioenergy; cell wall polysaccharides; lignin; recalcitrance; saccharification