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Generation mechanism of growth stresses in wood cell walls: roles of lignin deposition and cellulose microfibril during cell wall maturation



Generation mechanism of growth stresses in wood cell walls: roles of lignin deposition and cellulose microfibril during cell wall maturation



Wood Science and Technology 32(3): 171-182



To explain the generation mechanism of tree growth stresses in relation to time and location inhomogeneity in the secondary wall lignification, we made a theoretical discussion by using an analytical model. In this analysis, time dependence, which has not been explicitly considered in a conventional model, was introduced. This made us possible to simulate the generation process of the growth stresses as a time dependent phenomenon attendant upon the secondary wall maturation. Analysis well explained the experimental results quantitatively on the assumption that a tensile stress originates in the cellulose microfibril as a bundle and a compressive stress are generated in the matrix skeleton during the secondary wall lignification. This verifies the propriety of "the unified hypothesis" proposed by Okuyama et al. quantitatively.

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Accession: 003149636

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DOI: 10.1007/bf00704840


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