Rapid plant movements triggered by action potentials

  title={Rapid plant movements triggered by action potentials},
  author={Takao Sibaoka},
  journal={The botanical magazine = Shokubutsu-gaku-zasshi},
  • T. Sibaoka
  • Published 1 March 1991
  • Biology
  • The botanical magazine = Shokubutsu-gaku-zasshi
Rapid bendings of the pulvinus inMimosa pudica, of the trap lobes inDionaea muscipula andAldrovanda vesiculosa, and of the tentacle in Drosera are triggered by action potentials in their motor cells. The action potential ofMimosa may be a C1−-spike, and that ofDionaea andAldrovanda may be a Ca2+-spike. Propagation of action potentials in the petiole or motor organ is thought to be electrotonie, cell-to-cell, transmission. The Ca 2+ release from unidentified organelles in the pulvinus or the Ca2… 
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Action Potentials and Rapid Plant Movements
This paper describes some recent findings in Mimosa and in two insectivores, Dionaea and Aldrovanda vesiculosa, and intends to gain some understanding about the bioelectric events occurring prior to the rapid plant movements.
It is clear that electrophysiology is an important aspect of many plant movements, and bears a remarkable similarity to excitation in animal nervous systems.
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The recovery and maintenance of the tannin vacuole in the spherical form may play a role in maintaining turgor in the motor cells of the abaxial half of the primary pulvinus of Mimosa.
Bioelectric regulation of tentacle movement in a dinoflagellate.
Simultaneous recordings of intracellular potentials and movements of the tentacle showed a consistent temporal relationship between potential changes and subsequent movement, and it is proposed that contraction of microtubules is the immediate cause of tentacle movements.
Connections and barriers between cells of Drosera tentacles in relation to their electrophysiology
The existence of the endodermoid partition is consistent with the observation that action potentials recorded extracellularly from the head may be positive-going while those recorded Extracellulary from the stalk are negative-going, and with the hypothesis previously proposed to explain why the amplitude of action possibles recorded from the mucilage varies as a function of the intensity of the receptor potential.
The influence of Ca2+ on the action potential in mesophyll cells ofDionaea muscipula Ellis
The influence of different ions on the action potential of Dionaea muscipula was measured by impaling microelectrodes into mesophyll cells of small leaf stripes which carried a trigger hair and elicited by bending the hair.
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