A Note on the Cell-Wall Structure of Softwood Tracheids


  • D. H. Page


Cell-wall models, cellulose, hemicellulose, lignin


Molecules of hemicellulose in walls of softwood tracheids are birefringent and lie essentially parallel to cellulose molecules. These hemicelluloses perform a structural function in providing a link between cellulose and lignin, and consequently should be considered as "coupling agents" between them. Models of the softwood tracheid cell wall should recognize this structural role for hemicelluloses.


Albersheim, P. 1975. The walls of growing plant cells. Sci. Am., 232(4):80-95.nCave, I. D. 1968. The anisotropic elasticity of the plant cell wall. Wood Sci. Technol.2(4): 268-278.nCowdrey, D. R., and R. D. Preston. 1966. Elasticity and microfibrillar angle in the wood of Sitka spruce. Proc. Roy. Soc.B166:245-272.nFengel, D. 1970. Page 74 in D. H. Page, ed. The physics and chemistry of wood pulp fibres. (Special Technical Association Publication No. 8, Tappi, New York, NY).nFrey-Wyssling, A. 1959. Die Pflanzliche Zellwand. Springer, Berlin.nLiang, C. Y., K. II. Bassett, E. A. McGinnes, and R. H. Marchessault. 1960. Infrared spectra of crystalline polysaccharides. 7. Thin wood sections. Tappi43(12):1017-1024.nMarchessault, R. H. 1964. In Actes du Symposim International de Grenoble. Les Imprimeries Réunies de Chambéry, Chambéry, France.nMarchessault, R. H., and C. Y. Liang. 1962. The infrared spectra of crystalline polysaccharides. 8. Xylans. J. Poly. Sci.59:357-378.nMark, R. E. 1967. Cell-wall mechanics of tracheids. Yale Univ. Press, New Haven, CT.nMerewether, J. W. T. 1960. The linkage of lignin in the plant. Pages 630-658 in F. E. Brauns and D. A. Brauns, The chemistry of lignin. Academic Press, New York.nPage, D. H., F. El-Hosseiny, M.-L. Bidmade, and R. Binet. 1976. Birefringence and the chemical composition of wood pulp fibers. Applied Polymer Symposium28:923-929.nPage, D. H., F. El-Hosseiny, K. Winkler, and R. Bain. 1972. The mechanical properties of single wood-pulp fibres. Part I: A new approach. Pulp Pap. Mag. Can.73(8):T198-T203.nPreston, R. D. 1964. Structural and mechanical aspects of plant cell walls with particular reference to synthesis and growth. Pages 169-188 in Martin Zimmerman, ed. The formation of wood in forest trees. Academic Press, New York.nSterman, S., and J. G. Marsden. 1968. Bonding organic polymers to glass by silane coupling agents. Pages 245-273 in R. T. Schwartz and H. S. Schwartz, eds. Fundamental aspects of fiber reinforced plastic composites. Interscience Publishers, New York.nWong, R. 1968. Mechanism of coupling by silanes of epoxies to glass fibers. Pages 237-243 in R. T. Schwartz and H. S. Schwartz, eds. Fundamental aspects of fiber reinforced plastic composites. Interscience Publishers, New York.n






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