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- Title
Action Potentials in Lupinus angustifolius L. Shoots.
- Authors
PASZEWSKI, ADAM; ZAWADZKI, TADEUSZ
- Abstract
In shoots an electrical stimulus (d.c.) produces a potential wave analogous to the action potential wave (AP) in stimulated simple plant cells or in nerves. The method used (Paszewski and Zawadzki, 1973) is similar to those applied in neurophysiology in research on the excitability of nerves. In the present paper the strength-duration relation (Eqn. (1)) of the excitation in italic has been used to calculate the values of the rheobase, chronaxie, and useful time of pulse. The rheobase, as a threshold value of the stimulus, is examined in terms of the applicability of the all-or-nothing law. The results suggest that the origin and propagation of AP in plants and in nerves may occur in a similar way. The analogy between the impulse propagation in nerve trunks and in shoots is discussed.
- Publication
Journal of Experimental Botany, 1974, Vol 25, Issue 6, p1097
- ISSN
0022-0957
- Publication type
Article