Summary
The effect of pH on the root membrane potentials was studied using excised roots of Hordeum vulgare, Triticum durum, and Agropyron elongatum (barley, wheat, and tall wheatgrass respectively). The measured potentials were lower the lower the pH of the KCl in the electromotive cell used for the measurements, thus indicating the presence in the root of pH-sensitive electric fields capable of affecting the mobilities of the K and Cl ions and hence the measured potentials. The root membrane potentials from the three species were equal to zero at pH 3. This is due to the fact that at this pH the potential of diffusion is zero because of the deminishing of the electric force fields in the roots. re]19720801
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Helmy, A.K., Peinemann, N. & Ferreiro, E.A. Effect of pH on root membrane potentials. Plant Soil 40, 253–259 (1974). https://doi.org/10.1007/BF00011508
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DOI: https://doi.org/10.1007/BF00011508