NDLI: Plasmodesmata as a Modulator of Osmotic Water Fluxes in Plants

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Plasmodesmata as a Modulator of Osmotic Water Fluxes in Plants

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Russian Journal of Plant Physiology : Volume 49, Issue 4, July 2002

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Russian Journal of Plant Physiology : Volume 49, Issue 1, January 2002

Russian Journal of Plant Physiology : Volume 48

Russian Journal of Plant Physiology : Volume 47

Plasmodesmata as a Modulator of Osmotic Water Fluxes in Plants

Content Provider	Springer Nature Link
Author	Anisimov, A. V. Egorov, A. G.
Copyright Year	2002
Abstract	Solutions to some key problems in the relationships between the structure and functions of plasmodesmata, a component of the plant intercellular communication system, are proposed on the basis of the theory of osmotic flows through porous membranes. The theory accounts for structural characteristics of plasmodesmata, such as their dimension, shape, and length. It considers the steric and adsorption potentials of the solution–cell wall interaction and estimates water and solute (e.g., sucrose) flows under the sustained difference of osmotic pressures at the ends of plasmodesmata. The theory predicts that the water flow through plasmodesmata increases with the widening of the neck constriction and reaches its peak when its size is equal to the diameter of the solute molecule. The water-flow direction was found to depend on the opening of the annulus in neck constrictions at negative adsorption potentials of the plasmodesmata channel walls. Taking into account the presence of sphincters in the neck constrictions, our data suggest the role of plasmodesmata as a modulator of osmotic water fluxes in plants.
Starting Page	677
Ending Page	684
Page Count	8
File Format	PDF
ISSN	10214437
Journal	Russian Journal of Plant Physiology
Volume Number	49
Issue Number	5
e-ISSN	16083407
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2002-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science

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