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The Cohesion-Tension Mechanism And The Acquisition Of Water By Plant Roots



The Cohesion-Tension Mechanism And The Acquisition Of Water By Plant Roots



Annual Review of Plant Physiology and Plant Molecular Biology 52: 847-875



The physical basis and evidence in support of the cohesion-tension theory of the ascent of sap in plants are reviewed. The focus is on the recent discussion of challenges to the cohesion-tension mechanism based on measurements with the pressure probe. Limitations of pressure probes to measure tensions (negative pressures) in intact transpiring plants are critically assessed. The possible role of the cohesion-tension mechanism during the acquisition of water and solutes by plant roots is discussed. Reprinted by permission of the publisher.

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Accession: 003581578

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PMID: 11337418

DOI: 10.1146/annurev.arplant.52.1.847



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