Involvement of receptor potentials and action potentials in mechano-perception in plants

  title={Involvement of receptor potentials and action potentials in mechano-perception in plants},
  author={Teruo Shimmen},
  journal={Functional Plant Biology},
  • T. Shimmen
  • Published 3 August 2001
  • Biology
  • Functional Plant Biology
The rapid turgor movements of Mimosa pudica and some carnivorous plants have long stimulated the interest of botanists. In addition, it is becoming evident that slower responses of plants to mechanical stimuli, such as coiling of tendrils and thigmomorphogenesis, are common phenomena. Electrophysiological studies on mechano-perception have been carried out in M. pudica and carnivorous plants, and have established that the response to mechanical stimulation is composed of three steps: perception… 

Mechanosensory ion channels in charophyte cells: the response to touch and salinity stress

The parallels between the process of touch-perception in freshwater Chara, and the turgor-regulating response to osmotic shock in salt-tolerant Lamprothamnium are drawn, showing how mechanoperception occurs in higher plants.

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.

Electrical perception of "death message" in chara: analysis of rapid component and ionic process.

Experiments under K(+)-induced depolarization unequivocally showed that the Cl(-) channel at the nodal end of the receptor cell was activated upon cutting the victim cell.

Action Potentials in a Giant Algal Cell: A Comparative Approach to Mechanisms and Evolution of Excitability

Comparison of the Chara AP characteristics with animal neuron and muscle APs reinforces understanding of mechanisms of excitability in animals, demonstrates that multiple solutions exist for action potential generation, and leads to discussion of the evolution of ion channels and excitability.

Mechanoreceptor Cells on the Tertiary Pulvini of Mimosa pudica L.

It is demonstrated that special red cells found on the adaxial surface of tertiary pulvini of Mimosa pudica are real mechanoreceptor cells that can generate receptor potential following mechanical stimuli and they are in connection with excitable motor cells (through plasmodesmata).

Resting electrical network activity in traps of the aquatic carnivorous plants of the genera Aldrovanda and Utricularia

Interestingly, more complex electrical activity was found in traps than in trap-free organs, supporting the hypothesis that the nature of the electrical activity may reflect the anatomical and functional complexity of different organs.

Electrophysiological characterization of the node in Chara corallina: functional differentiation for wounding response.

It has been reported that the node has a function to tranduce the signal of osmotic shock into a transient depolarization, and these electrical characteristics of the node were suggested to be responsible for the electrical response to wounding in Characeae.

Involvement of protein synthesis in recovery from refractory period of electrical depolarization induced by osmotic stimulation in Chara corallina

When unstimulated internodal cells were incubated in the medium containing an inhibitor of eukaryote-type protein synthesis, generation of the depolarization was almost completely inhibited, which suggested that the factor is slowly turning over even in the absence of osmotic stimulation.

Electrical perception of the 'death message' in Chara: analysis of K+-sensitive depolarization.

Findings suggested the involvement of K(+) released from the victim cell in generating the long-lasting depolarization by the receptor cell.

Mechano-perception in Chara cells: the influence of salinity and calcium on touch-activated receptor potentials, action potentials and ion transport.

Touch-stimulated and spontaneous excitation accelerates the process in a Ca(2+)-dependent manner, and these results have broad implications for understanding the interactions between mechano-perception and salinity stress in plants.



The Touch-induced Action Potential in Chara: Inquiry into the Ionic Basis and the Mechanoreceptor

An assay to characterize the mechanoreceptor for the touch-induced action potential of Chara internodal cells is developed and it is proposed that this class of mechanoreceptors senses touch by sensing changes in tension which is a result of the magnitude but not the sign of the displacement of the membrane.

Transgenic plant aequorin reports the effects of touch and cold-shock and elicitors on cytoplasmic calcium

It is shown here that aequorin can be reconstituted in transformed plants and that it reports calcium changes induced by touch, cold-shock and fungal elicitors, which could be valuable for determining the role of calcium in intracellular signalling processes in plants.

Studies on Mechanoperception in Characean Cells: Pharmacological Analysis

It is suggested that the channels involved in generating the receptor potential are insensitive to these channel inhibitors, although all inhibitors significantly inhibited the action potential.

Electrical signalling and systemic proteinase inhibitor induction in the wounded plant

It is shown that translocation in the phloem of tomato seedlings can be completely inhibited without effect on the systemic accumulation of pin transcripts and pin activity, and without hindrance to propagated electrical signals.

Effects of mechanical signaling on plant cell cytosolic calcium.

The data indicate that the effect of mechanical stimulation can be found in a number of different cell types and in a lower plant as well as tobacco and suggest that mechanoperception and the resulting increase in cytoplasmic Ca2+ may be widespread.

Wind-induced plant motion immediately increases cytosolic calcium.

  • M. KnightS. SmithA. Trewavas
  • Biology, Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1992
The data suggest that mechanoperception in plant cells may possibly be transduced through intracellular calcium, and that calcium could be central in the control and generation of plant form.

Studies on Mechano-Perception in Characeae: Decrease in Electrical Membrane Resistance in Receptor Potentials

The present results support the hypothesis that the receptor potential is generated by activation of ion channel(s) and demonstrate the first success in demonstrating a change in the membrane resistance in receptor potential induced mechanically in plants.

Studies on Mechano-Perception in Characean Cells: Development of a Monitoring Apparatus

An apparatus to monitor the electrical signal generated in Chara cells upon mechanical stimulation was developed and the receptor potential and action potential were characterized.

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

Mechanism of the Seismonastic Reaction in Mimosa pudica.

The efflux of K(+) from the pulvinar cells of Mimosa pudica was shown to increase substantially during the seismonastic reaction. This result is shown to indicate a decrease in sigma (reflection