Studies on Mechano-Perception in Characean Cells: Development of a Monitoring Apparatus

元データ 日本植物生理学会


An apparatus to monitor the electrical signal generated in Chara cells upon mechanical stimulation was developed. An internodal cell was stimulated by dropping a glass tubing with the intensity of the stimulus being controlled by changing either the weight of the glass tubing or the height from which it was dropped. Upon stimulation, a receptor potential was generated with the amplitude being dependent on the stimulus intensity. When the receptor potential reached a threshold value, an action potential was generated. The receptor potential and action potential were characterized. The usefulness of this apparatus for analyzing receptor potentials is discussed.


Shimmen Teruo Department Of Biology Faculty Of Science University Of Tokyo
Shimmen Teruo Department Of Biology Faculty Of Science Osaka University:(present)department Of Botany Faculty Of S