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Wall extensibility: its nature, measurement and relationship to plant cell growthExpansive growth of plant cells is controlled principally by processes that loosen the wall and enable it to expand irreversibly. The central role of wall relaxation for cell expansion is reviewed. The most common methods for assessing the extension properties of plant cell walls ( wall extensibility') are described, categorized and assessed critically. What emerges are three fundamentally different approaches which test growing cells for their ability (a) to enlarge at different values of turgor, (b) to induce wall relaxation, and (c) to deform elastically or plastically in response to an applied tensile force. Analogous methods with isolated walls are similarly reviewed. The results of these different assays are related to the nature of plant cell growth and pertinent biophysical theory. I argue that the extensibilities' measured by these assays are fundamentally different from one another and that some are more pertinent to growth than others.
Document ID
Document Type
Reprint (Version printed in journal)
Cosgrove, D. J.
(University Park 16802)
Date Acquired
August 21, 2013
Publication Date
May 1, 1993
Publication Information
Publication: The New phytologist
Volume: 124
Issue: 1
ISSN: 0028-646X
Subject Category
Life Sciences (General)
Distribution Limits
Review, Academic
NASA Discipline Number 40-50
Non-NASA Center
NASA Discipline Plant Biology
NASA Program Space Biology

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