1999 Volume 67 Issue 1 Pages 18-21
The intracellular potentia1 (VICP) and the cell membrane electrical impedance (ZCM) of a cultured tobacco cel1, line BY-2, were measured simultaneously using a multifunctional microelectrode. In the experiment done in this study, VICP corresponded to the cross membrane potentia1 (VCMP) of the cell. When a control potentia1 (VCON) was varied stepwise in a range from −100 ~ +100mV, VCMP changed accordingly without any significant change in |ZCM|. The relationship between VCON and the change in VCMP (ΔVCMP) showed an asymmetrical property; ΔVCMP/VCON for positive VCON was smaller than that for negative VCON.