Abscisic Acid Transport Coefficients of Phaseolus Root Systems
Open Access
- 31 May 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 69 (6) , 1353-1355
- https://doi.org/10.1104/pp.69.6.1353
Abstract
Diffusive and convective transport coefficients of Phaseolus vulgaris L. cv. Ouray root systems for abscisic acid for (ABA) were measured. The convective coefficient (reflection coefficient or osmotic efficiency factor) σ was determined to be 0.96 for ABA while the diffusive coefficient, ω, was found to be 1.44 × 10−11 mole per square centimeter per second per bar. Steady-state concentrations of ABA in the root system exudates were not achieved until at least three hours after the applications suggesting either a slow saturation of binding sites or equilibration with tissues surrounding the xylem.This publication has 4 references indexed in Scilit:
- Penetration of Soybean Root Systems by Abscisic Acid IsomersPlant Physiology, 1982
- Effects of Abscisic Acid on the Hydraulic Conductance of and the Total Ion Transport through Phaseolus Root SystemsPlant Physiology, 1981
- Relationships between Root System Water Transport Properties and Plant Size in PhaseolusPlant Physiology, 1979
- Determination of Hydraulic and Osmotic Properties of Soybean Root SystemsPlant Physiology, 1977