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Updated: Sep 23, 2025
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Measuring the Osmotic Water Permeability Coefficient Pf of Spherical Cells: Isolated Plant Protoplasts as an Example
Published on: October 8, 2014
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Two-step diffusion in cellular hygroscopic (vascular plant-like) materials
Marion Cocusse1, Matteo Rosales1, Benjamin Maillet1
1Laboratoire Navier (Ecole des Ponts Paris Tech-Univ Gustave Eiffel-CNRS), Champs-sur-Marne, France.
Science Advances
|May 13, 2022
Summary
Vascular plants store water as free or bound. During drying, bound water facilitates transport, enabling deep water extraction even without a continuous free water network.
Area of Science:
- Plant physiology
- Biophysics
- Wood science
Background:
- Vascular plants possess a hygroscopic cellular structure containing both free and bound water.
- Understanding water dynamics is crucial for processes like drying and water transport in plants.
Purpose of the Study:
- To differentiate the dynamics of free and bound water during convective drying in softwood.
- To elucidate the mechanisms of water transport within the plant's cellular structure.
Main Methods:
- Utilized nuclear magnetic resonance (NMR) techniques to analyze water dynamics.
- Studied water behavior in softwood under convective drying conditions.
Main Results:
- Identified two distinct diffusion mechanisms corresponding to regions with free water and regions with only bound water.
- Demonstrated that bound water is essential for water transport, regardless of free water presence.
- Showcased the ability to extract free water from deep within the material without requiring a continuous free water network.
Conclusions:
- Bound water plays a critical role in water transport during convective drying of vascular plants.
- The findings suggest novel approaches for managing water storage and extraction in plant materials.
- This research provides insights into the fundamental mechanisms governing water movement in hygroscopic biological structures.
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