Summary
Voltage 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 electrodes applied to any region of the stalk of the tentacle. Inflection of the lower stalk follows the occurrence of action potentials. Inflection is minute for isolated action potentials but large and rapid when several occur within a brief interval.
The apparent amplitude of action potentials recorded from the stalk is independent of receptor potential amplitude, but that of action potentials recorded from the mucilage commonly decreases as the receptor potential deviates from the baseline and increases as it returns. It is suggested that variation of apparent amplitude of the action potentials may result from postulated variation in the resistance of receptor membranes.
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References
Ashida, J.: Studies on the leaf movement of Aldrovanda vesiculosa L. I. Process and mechanism of the movement. Mem. Coll. Sci., Kyoto Imp. Univ., Ser. B, 9, 141–244 (1934).
Ashida, J.: Studies on the leaf movement of Aldovanda vesiculosa L. II. Effects of mechanical, electrical, thermal, osmotic and chemical influences. Mem. Coll. Sci., Kyoto Imp. Univ., Ser. B, 11, 55–113 (1935).
Behre, K.: Physiologische und zytologische Untersuchungen über Drosera. Planta (Berl.) 7, 208–306 (1929).
Benolken, R. M., Jacobson, S. L.: Response properties of a sensory hair exised from Venus's flytrap. J. gen. Physiol. 56, 64–82 (1970).
Bose, J. C.: Comparative electro-physiology. London: Longmans, Green 1907.
Brown, W. H.: The mechanism of movement and the duration of the effect of stimulation in the leaves of Dionaea. Amer. J. Bot. 3, 68–90 (1916).
Bullock, T.H., Horridge, G. A.: Structure and function in the nervous systems of invertebrates, vol. 1. San Francisco-London: W. F. Freeman 1965).
Burdon-Sanderson, J.: Note on the electrical phenomena which accompany stimulation of the leaf of Dionaea muscipula. Proc. roy. Soc. 21, 495–496 (1873).
Burdon-Sanderson, J.: The excitability of plants. In: Sir John Burdon-Sanderson, a memoir... with a selection from his papers and addresses, p. 172–198 (Burdon-Sanderson, G., et al., eds.). Oxford: Clarendon Press 1911.
Burdon-Sanderson, J., Page, F. J. M.: On the mechanical effects and on the electrical disturbance consequent on excitation of the leaf of Dionaea muscipula. Proc. roy. Soc. 25, 411–434 (1876).
Czaja, A. T.: Reizphysiologische Untersuchungen an Aldrovanda vesiculosa L. Pflügers Arch. ges. Physiol. 206, 635–658 (1924).
Darwin, C.: Insectivorous plants. 1st edn. London: J. Murray 1875.
Darwin, F.: More letters of Charles Darwin, vol. 2. London: J. Murray 1903.
Dryl, S., Grεbecki, A.: Progress in the study of excitation and response in ciliates. Protoplasma 62, 255–284 (1966).
Hooker, H. D., Jr.: Physiological observations on Drosera rotundifolia. Bull. Torrey Bot. Club 43, 1–27 (1916).
Jacobson, S. L.: The ionic basis for the response to stimulation of Venus's fly-trap. Doct. dissertation, Univ. of Minnesota, Minneapolis 1968.
Josephson, R. K.: Mechanisms of pacemaker and effector integration in coelenterates. Symp. Soc. exp. Biol. 20, 33–47 (1966).
Mellon, D.: The physiology of sense organs. San Francisco: Freeman 1968.
Nitschke, T.: Über die Reizbarkeit der Blätter von Drosera rotundifolia L. Bot. Ztg 18, 229–250 (1860).
Pickard, B. G.: Action potentials resulting from mechanical stimulation of pea epicotyls. Planta (Berl.) 97, 106–115 (1971).
Pfeffer, W.: The physiology of plants, vol. III, 2nd edn., trsltd. by A. J. Ewart. London: Oxford 1906.
Sinyukhin, A. M., Britikov, E. A.: Action potentials in the reproductive systems of plants. Nature (Lond.) 215, 1278–1280 (1967a).
Sinyukhin, A. M., Britikov, E. A.: Generation of potentials in the pistils of Incarvillea and Lily in conjunction with movement of the stigma and fertilization. Soviet Plant Physiol. 14, 393–403 (1967b).
Umrath, K.: Über Erregungsleitung bei höheren Pflanzen. Planta (Berl.) 7, 174–207 (1929).
Umrath, K.: Der Erregungsvorgang bei höheren Pflanzen. Ergebn. Biol. 14, 1–142 (1937).
Umrath, K.: Der Erregungsvorgang. In: Encycl. Plant Physiol., vol. XVII, pt. 1, p. 24–110 (W. Ruhland, ed.) Berlin-Heidelberg-New York: Springer 1959.
Weatherburn, M. W.: Phenol-hypochlorite reaction for determination of ammonia. Analyt. Chem. 39, 971–974 (1967).
Whitaker, E. H.: Physiological studies of two species of Drosera L. Doct. dissert., Cornell Univ., Ithaca, N. Y. 1949.
Williams, S. E.: Rapid inflection of Drosera Tentacles. Doct. dissert., Washington Univ., St. Louis, Mo., 1971.
Williams, S. E.: Pickard, B. G.: Properties of action potentials in Drosera tentacles Planta (Berl.) 103, 222–240 (1972).
Wolbarsht, M. L.: Electrical characteristics of insect mechanoreceptors. J. gen. Physiol. 44, 105–122 (1960).
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Williams, S.E., Pickard, B.G. Receptor potentials and action potentials in Drosera tentacles. Planta 103, 193–221 (1972). https://doi.org/10.1007/BF00386844
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DOI: https://doi.org/10.1007/BF00386844