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The mechanism of the NH4 ion oscillatory transport across the excitable cell membrane

Radenović Čedomir N. (Maize Research Institute, Zemun Polje, Biophysics Laboratory, Belgrade and Faculty of Physical Chemistry, University of Belgrade, Belgrade)
Beljanski Miloš V. (Institute of General and Physical Chemistry, University of Belgrade, Belgrade)
Maksimov Georgij V. (Lomonosov State University, Moscow, Russia)
Kalauzi Aleksandar A. (Multidisciplinary Study Centre, University of Belgrade, Belgrade)
Dražić Milan D. (Faculty of Mathematics, Belgrade)

This paper presents results on typical oscillations of the membrane potential induced by the excitation of the cell membrane by different concentrations of the NH4Cl solution. The existence of four classes of oscillations of the membrane potential and several different single and local impulses rhythmically occurring were determined. It is known that the oscillatory processes of the membrane potential are in direct dependence on oscillatory transport processes of NH4 and Cl ions across the excitable cell membrane. A hypothesis on a possible mechanism of oscillatory transport processes of NH4 and Cl ions across the excitable cell membrane is also presented.

Keywords: plant cell membrane, excited state, membrane potential, oscillatory transport, NH4 ion