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Freudling C, Mayer WE, Gradmann D. Electrical Membrane Properties and Circadian Rhythm in Extensor Cells of the Laminar Pulvini of Phaseolus coccineus L. Plant Physiol. 1980;65(5):966-8doi: 10.1104/pp.65.5.966.
Freudling, C., Mayer, W. E., & Gradmann, D. (1980). Electrical Membrane Properties and Circadian Rhythm in Extensor Cells of the Laminar Pulvini of Phaseolus coccineus L. Plant physiology, 65(5), 966-8. https://doi.org/10.1104/pp.65.5.966
Freudling, C, et al. "Electrical Membrane Properties and Circadian Rhythm in Extensor Cells of the Laminar Pulvini of Phaseolus coccineus L." Plant physiology vol. 65,5 (1980): 966-8. doi: https://doi.org/10.1104/pp.65.5.966
Freudling C, Mayer WE, Gradmann D. Electrical Membrane Properties and Circadian Rhythm in Extensor Cells of the Laminar Pulvini of Phaseolus coccineus L. Plant Physiol. 1980 May;65(5):966-8. doi: 10.1104/pp.65.5.966. PMID: 16661315; PMCID: PMC440457.
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Plant Physiol. 1980 May;65(5):966-8. doi: 10.1104/pp.65.5.966.

Electrical Membrane Properties and Circadian Rhythm in Extensor Cells of the Laminar Pulvini of Phaseolus coccineus L.

Plant physiology

C Freudling, W E Mayer, D Gradmann

Affiliations

  1. Institut für Biologie I, Auf der Morgenstelle 1, D-7400 Tübingen, Federal Republic of Germany.

PMID: 16661315 PMCID: PMC440457 DOI: 10.1104/pp.65.5.966

Abstract

Circadian changes of three parameters of electrical properties in extensor cells of the laminar pulvini of Phaseolus coccineus L. have been recorded by standard microelectrode techniques. In the low turgor state of the cells, the resting potential and the CN(-) (1 millimolar NaCN) induced depolarizations are large, while the K(+)-induced voltage changes are small, and vice versa in the high turgor state. These results demonstrate that during a circadian cycle the low turgor state of the extensor cells is correlated with the active state of an electrogenic pump. This correlation can be explained by electroosmosis.

References

  1. Nature. 1975 May 29;255(5507):408-10 - PubMed
  2. Plant Physiol. 1976 Aug;58(2):190-2 - PubMed
  3. FEBS Lett. 1978 Oct 1;94(1):17-9 - PubMed

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