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Type: Journal article
Title: Aquaporins: highly regulated channels controlling plant water relations
Author: Chaumont, F.
Tyerman, S.
Citation: Plant Physiology, 2014; 164(4):1600-1618
Publisher: American Society of Plant Biologists
Issue Date: 2014
ISSN: 0032-0889
Statement of
François Chaumont and Stephen D. Tyerman
Abstract: Plant growth and development are dependent on tight regulation of water movement. Water diffusion across cell membranes is facilitated by aquaporins that provide plants with the means to rapidly and reversibly modify water permeability. This is done by changing aquaporin density and activity in the membrane, including posttranslational modifications and protein interaction that act on their trafficking and gating. At the whole organ level aquaporins modify water conductance and gradients at key "gatekeeper" cell layers that impact on whole plant water flow and plant water potential. In this way they may act in concert with stomatal regulation to determine the degree of isohydry/anisohydry. Molecular, physiological, and biophysical approaches have demonstrated that variations in root and leaf hydraulic conductivity can be accounted for by aquaporins but this must be integrated with anatomical considerations. This Update integrates these data and emphasizes the central role played by aquaporins in regulating plant water relations.
Keywords: Aquaporins; protein processing, post-translational
Rights: Copyright © 2014 American Society of Plant Biologists. All rights reserved.
DOI: 10.1104/pp.113.233791
Grant ID: ARC
Appears in Collections:Agriculture, Food and Wine publications
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