Abstract
Summary By microelectrode technique it was shown that application of 4.6 × 10 −8 M kinetin, after short-term depolarization ( + equilibrium potential.After 5-day incubation of intact roots in a 4.6 × 10 −8 M kinetin solutio a K + activity in root hairs diminished, while it remaind unchanged in atrichoblasts.The reduction of K + activity in root hairs induced by the removal of the meristematic root tip could be neutralized by kinetin application.From the results the conclusion, is drawn that kinetin influences the K + transport in the roots and that root tip is of importance for regulating K + transport in root cells.
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