Receptor potentials and action potentials in Drosera tentacles

@article{Williams2004ReceptorPA,
  title={Receptor potentials and action potentials in Drosera tentacles},
  author={Stephen E Williams and B. Pickard},
  journal={Planta},
  year={2004},
  volume={103},
  pages={193-221}
}
SummaryVoltage fluctuations identified as receptor potentials can be detected with electrodes applied to the mucilage surrounding the head of a tentacle of Drosera intermedia if the head is stimulated by contact with a live insect, by the touch of a clean, inert object, or by application of salt solutions. Associated with a low receptor potential are action potentials, which occur at a frequency dependent on the magnitude of the receptor potential. These action potentials can be detected with… Expand
Properties of action potentials in Drosera tentacles
SummaryAction potentials of Drosera tentacles resemble those of vertebrate peripheral nerves in that they appear to be comprised of relatively uniform spikes, variable shoulders or negativeExpand
Propagation of the neuroid action potential of the carnivorous plantDrosera
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The neuroid action potentials ofDrosera rotundifolia recorded from single cells resemble those recorded from the surface of tentacle stalks and they show the same variation of duration with interval that characterizes the extracellularly recordedaction potentials. Expand
Rapid plant movements triggered by action potentials
  • T. Sibaoka
  • Biology
  • The botanical magazine = Shokubutsu-gaku-zasshi
  • 2006
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.Expand
Connections and barriers between cells of Drosera tentacles in relation to their electrophysiology
TLDR
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. Expand
Spontaneous electrical activity in shoots of Ipomoea, Pisum and Xanthium
TLDR
Extracellular recordings from light-grown shoots of Ipomoea and Xanthium contain trains of spontaneous fluctuations which resemble action potentials, and a greater number of the individual spikes have a relatively slow time course and a higher apparent amplitude. Expand
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This review explores the relationship between electrical long-distance signaling and the potential consequences for physiological processes in plants. Electrical signals such as action potentialsExpand
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Traditionally, in the minds of most biologists, one of the most striking differences between plants and animals is that animals can coordinate their activities by means of electrical excitationsExpand
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TLDR
In the sensitive plant, Mimosa pudica, action potentials arise when the leaves are touched and they trigger a sudden decrease in turgor of the pulvinar motor cells, which causes the leaf to close, and it is suggested that it also triggers phloem unloading of sucrose in the pulvini. Expand
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