Document Detail

Cell wall elasticity: I. A critique of the bulk elastic modulus approach and an analysis using polymer elastic principles.
MedLine Citation:
PMID:  11541279     Owner:  NASA     Status:  MEDLINE    
The traditional bulk elastic modulus approach to plant cell pressure-volume relations is inconsistent with its definition. The relationship between the bulk modulus and Young's modulus that forms the basis of their usual application to cell pressure-volume properties is demonstrated to be physically meaningless. The bulk modulus describes stress/strain relations of solid, homogeneous bodies undergoing small deformations, whereas the plant cell is best described as a thin-shelled, fluid-filled structure with a polymer base. Because cell walls possess a polymer structure, an alternative method of mechanical analysis is presented using polymer elasticity principles. This initial study presents the groundwork of polymer mechanics as would be applied to cell walls and discusses how the matrix and microfibrillar network induce nonlinear stress/strain relationships in the cell wall in response to turgor pressure. In subsequent studies, these concepts will be expanded to include anisotropic expansion as regulated by the microfibrillar network.
H I Wu; R D Spence; P J Sharpe; J D Goeschl
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Plant, cell & environment     Volume:  8     ISSN:  0140-7791     ISO Abbreviation:  Plant Cell Environ.     Publication Date:  1985 Nov 
Date Detail:
Created Date:  1998-12-13     Completed Date:  1998-12-13     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9309004     Medline TA:  Plant Cell Environ     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  563-70     Citation Subset:  S    
Department of Industrial Engineering, Texas A&M University, College Station 77843, USA.
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MeSH Terms
Biological Transport / physiology
Biophysical Phenomena
Cell Membrane Permeability / physiology*
Cell Physiological Phenomena
Cell Wall / chemistry,  physiology,  ultrastructure
Models, Biological*
Plant Physiological Phenomena*
Plants / chemistry,  cytology*,  ultrastructure
Polymers / chemistry*
Stress, Mechanical
Reg. No./Substance:
Comment In:
Plant Cell Environ. 1988;11:67-9   [PMID:  11542201 ]

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