Receptor potentials and action potentials in Drosera tentacles

  title={Receptor potentials and action potentials in Drosera tentacles},
  author={Stephen E. Williams and Barbara G. 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… 

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 negative

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.

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.

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.

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.

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 potentials

Electrical signals in higher plants

Three lines of evidence are discussed that action potentials may be of general occurrence in higher plants by means of fluctuations of voltage: repetitive spikes, solitary spikes, and general activity.

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 information

Analysis of Possible Involvement of Local Bioelectric Responses in Chilling Perception by Higher Plants Exemplified by Cucurbita pepo

It is shown that local bioelectric responses induced by graded local chilling are similar to the receptor potentials of animals, and results indicate that local electrical responses may be involved in early stages of cooling perception in cells of higher plants devoid of locomotive functions.

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 negative

Electrical Characteristics of Insect Mechanoreceptors

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.

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 radially

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.

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 the

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 is

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 mediate

The Excitability of Plants

  • Geology
  • 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 has

The Physiology of Sense Organs

  • D. Egger
  • Biology
    The Yale Journal of Biology and Medicine
  • 1969
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 Series

Reizphysiologische Untersuchungen an Aldrovandia vesiculosa L.

  • A. Czaja
  • Chemistry
    Pflüger's Archiv für die gesamte Physiologie des Menschen und der Tiere
  • 2005
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 u