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. 1976 May;57(5):738-9.
doi: 10.1104/pp.57.5.738.

Interaction between Osmotic- and Pressure-induced Water Flow in Plant Roots

E I Newman  1
Affiliations

Interaction between Osmotic- and Pressure-induced Water Flow in Plant Roots

E I Newman. Plant Physiol. 1976 May.

Abstract

When the pressure gradient across a root alters, there is often an apparent change in the permeability of the root to water. Fiscus (Plant Physiol. 1975. 55: 917-922) has suggested that this can be explained by a simple two-compartment model which takes into account rates of solute uptake into the xylem. A method of testing actual data against the Fiscus model is proposed; this shows that in some cases the apparent changes in permeability cannot be explained by the model. The model is not adequate to predict the amounts of solute reaching the xylem by passive drag: a three-compartment model would be more realistic.

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References

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    1. Proc R Soc Lond B Biol Sci. 1957 Dec 3;147(928):381-91 - PubMed
    1. Plant Physiol. 1974 Aug;54(2):169-72 - PubMed
    1. Plant Physiol. 1975 May;55(5):917-22 - PubMed

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