Radial diffusion transport of water in various zones of maize root and its sensitivity to mercury chloride

Radial diffusion transport of water in various zones of maize root and its sensitivity to mercury... NMR-spin echo method was used for comparative study of radial water diffusion in various zones of maize (Zea mays L., cv. Donskaya 1) primary root. Coefficients of water diffusion varied strongly along the root length; the pattern of variations depended on the period during which the diffusion of water molecules was traced. Water diffusion transport in various root zones was unevently sensitive to mercury chloride, an aquaporin inhibitor. The discovered variations in the mobility of water molecules were assigned to morphological and functional features of cells and tissues in the root zones examined; they were interpreted in terms of variable contribution and redistribution of water flows along several transport pathways. The decrease in diffusional water flows could be caused by cell wall modifications (deposition of suberin) that emerge in the endoderm regions distant from the root apex and diminish the contribution of apoplastic transport. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Radial diffusion transport of water in various zones of maize root and its sensitivity to mercury chloride

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443707020100
Publisher site
See Article on Publisher Site

Abstract

NMR-spin echo method was used for comparative study of radial water diffusion in various zones of maize (Zea mays L., cv. Donskaya 1) primary root. Coefficients of water diffusion varied strongly along the root length; the pattern of variations depended on the period during which the diffusion of water molecules was traced. Water diffusion transport in various root zones was unevently sensitive to mercury chloride, an aquaporin inhibitor. The discovered variations in the mobility of water molecules were assigned to morphological and functional features of cells and tissues in the root zones examined; they were interpreted in terms of variable contribution and redistribution of water flows along several transport pathways. The decrease in diffusional water flows could be caused by cell wall modifications (deposition of suberin) that emerge in the endoderm regions distant from the root apex and diminish the contribution of apoplastic transport.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Mar 20, 2007

References

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