Premium
Extra‐ and intracellular measurements of action potentials in the liverwort Conocephalum conicum
Author(s) -
Zawadzki T.,
Trębacz K.
Publication year - 1985
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1985.tb08525.x
Subject(s) - thallus , extracellular , intracellular , biophysics , action (physics) , biology , botany , physics , microbiology and biotechnology , quantum mechanics
Action potentials induced by electrical stimuli were recorded from the thalli of tfie liverwort, Conocephalum conicum L. An analysis of an equivalent circuit of Conocephalum conicum thallus in situ has shown that the multiphasic time course of extracellular recordings is caused by a branching of extracellular conduction layers and by an overlapping of action currents. As compared to the velocity of excitation propagation without short‐circuiting, more than 10 times higher rates of action potential conduction have been recorded when the plants are immersed in a low resistaace solution. Furthermore, simultaneous extra‐ and intracellular recordings from thalli in situ are presented.