  Adopting a spintronics-inspired approach, we study the reciprocal coupling
between ionic charge currents and nematic texture dynamics in a uniaxial
nematic electrolyte. Assuming quenched fluid dynamics, we develop equations of
motion analogously to spin torque and spin pumping. Based on the principle of
least dissipation of energy, we derive the adiabatic "nematic torque" exerted
by ionic currents on the nematic director field as well as the reciprocal
motive force on ions due to the orientational dynamics of the director. We
discuss several simple examples that illustrate the potential functionality of
this coupling. Furthermore, using our phenomenological framework, we propose a
practical means to extract the coupling strength through impedance measurements
on a nematic cell. Exploring further applications based on this physics could
foster the development of nematronics -- nematic iontronics.
