Summary
An inhibition of root growth, a decrease in the amount of potassium (as 86Rb) and phosphate (32P) accumulation by the root, and a partial depolarization of transmembrane electropotential were observed to develop with a similar time course and to a similar extent when intact maize (Zea mays L.) roots were treated with 10-5 M abscisic acid (ABA). Potassium uptake was inhibited by ABA when excised, low-salt roots were bathed in KCl, KH2PO4, or K2SO4. ABA did not affect the ATP content of the tissues, the activity of isolated mitochondria, nor the activity of microsomal K+-stimulated ATPases.
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Shaner, D.L., Mertz, S.M. & Arntzen, C.J. Inhibition of ion accumulation in maize roots by abscisic acid. Planta 122, 79–90 (1975). https://doi.org/10.1007/BF00385407
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DOI: https://doi.org/10.1007/BF00385407