Receptor potentials and action potentials in Drosera tentacles

  title={Receptor potentials and action potentials in Drosera tentacles},
  author={Stephen E Williams and B. Pickard},
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
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
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
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
Generation, Transmission, and Physiological Effects of Electrical Signals in Plants
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
Electrical signals in higher plants
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
Environmental stimuli and physiological responses: The current view on electrical signalling
It was shown that apart from hydraulic signals, electric signals also play a significant role in root-to-shoot communication of drought-stressed plants and evidence was found for a link between electrical signals and photosynthesis as well as respiration. Expand
Characteristics and Functions of Phloem-Transmitted Electrical Signals in Higher Plants
Electrical signalling along the phloem has been studied in a number of species like maize, willow and Mimosa. It appears that sieve tubes with their large sieve pores are used to transmit informationExpand
Control of phloem unloading by action potentials in Mimosa
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


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
Electrical Characteristics of Insect Mechanoreceptors
  • M. Wolbarsht
  • Biology, Medicine
  • The Journal of general physiology
  • 1960
External direct coupled recordings from the neurons of the mechanosensory hairs of insects show nerve impulses and graded slow potentials in response to deformation of the hair which appears likely to be caused by a change in conductance of the cell membrane at the receptor site. Expand
Response Properties of a Sensory Hair Excised from Venus's Flytrap
Multicellular sensory hairs were excised from the leaf of Venus's flytrap, and the sensory cells were identified by a destructive dissection technique. The sensory layer includes a radiallyExpand
Progress in the study of excitation and response in ciliates
This line of research meets now an important support in the reeent aehievements of the electron mieroseopy of cilia and pelliele and in the biochemistry and in .the biochemistry of eiliary proteins, however, these last two fields will not be covered by this review. Expand
I. On the mechanical effects and on the electrical disturbance consequent on excitation of the leaf of Dionæa muscipula
The mechanism by which the leaf of Dionæa closes after mechanical excitation has been already studied by Mr. Darwin and many other naturalists. It was, however, necessary, in order to connect theExpand
I. Note on the electrical phenomena which accompany irritation of the leaf of Dionæa muscipula
1. When the opposite ends of a living leaf of Dionæa are placed on non-polarizable electrodes in metallic connexion with each other, and a Thomson’s reflecting galvanometer of high resistance isExpand
Action potentials resulting from mechanical stimulation of pea epicotyls
SummaryNon-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 mediateExpand
The Excitability of Plants
  • Nature
  • 1882
IT will be in the recollection of many who are present this evening that in February of last year I had the honour of delivering a Friday evening discourse on a subject which included that which hasExpand
The Physiology of Sense Organs
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to the non-sporeforming anaerobes (Bacteroidaceae, anaerobic cocci, Lacto-bacteria and Corynebacteria, Actinomycetes). The book by Smith and Holdeman, published as part of the American Lecture SeriesExpand
Reizphysiologische Untersuchungen an Aldrovandia vesiculosa L.
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  • Chemistry
  • Pflüger's Archiv für die gesamte Physiologie des Menschen und der Tiere
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Eine der v ie l le icht in te ressan tes ten re izbaren Pf lanzen u n t e r den Insec t ivoren , welche se ismonust isch empf ind l ich sind, i s t b isher noch n ich t ausf i ihr l ich u n t e r s uExpand