The Structure of Plant Cell Walls: VII. Barley Aleurone Cells.

Plant Physiology
M McNeil, P Albersheim

Abstract

The walls of barley (Hordeum vulgare var. Himalaya) aleurone cells are composed of two major polysaccharides, arabinoxylan (85%) and cellulose (8%). The cell wall preparations contain 6% protein, but this protein does not contain detectable amounts of hydroxyproline. The arabinoxylan has a linear 1,4-xylan backbone; 33% of the xylosyl residues are substituted at the 2 and/or 3 position with single arabinofuranosyl residues. The results of in vitro cellulose binding experiments support the hypothesis that noncovalent bonds between the arabinoxylan chains and cellulose fibers play a part in maintaining wall structure. It is suggested that bonding between the arabinoxylan chains themselves is also utilized in forming the walls.

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Citations

Nov 1, 1986·Planta·E Benjavongkulchai, M S Spencer
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Apr 28, 2006·Journal of Agricultural and Food Chemistry·Terrence MadhujithFereidoon Shahidi

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