Summary
Non-propagating, asynchronous action potentials may be detected with an extracellular electrode placed on the hook of the pea epicotyl following mechanical stimulation. These may well mediate the release of ethylene which has previously been shown to control the diameter of mechanically stressed shoots.
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References
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Pickard, B.G. Action potentials resulting from mechanical stimulation of pea epicotyls. Planta 97, 106–115 (1971). https://doi.org/10.1007/BF00386758
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DOI: https://doi.org/10.1007/BF00386758