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. 1974 Sep;54(3):280–285. doi: 10.1104/pp.54.3.280

Rhythmic Potassium Flux in Albizzia

Effect of Aminophylline, Cations, and Inhibitors of Respiration and Protein Synthesis 1,2

Ruth L Satter a,3, Philip B Applewhite a,4, Arthur W Galston a
PMCID: PMC367397  PMID: 16658874

Abstract

Rhythmic leaflet movement in Albizzia is controlled by rhythmic K+ flux in pulvinal motor cells. The angle assumed by darkened leaflets during the open phase of the rhythm can be altered by various compounds and changes in temperature; such treatments are ineffective during the closed phase. In all cases, effects on leaflet angle are correlated with and probably a consequence of K+ flux in pulvinal motor cells. Incubation at low temperature (6C) or on sodium azide (1.0 mm) reduces K+ in the ventral motor region and increases K+ in the dorsal motor region, thereby decreasing leaflet angle. Incubation on cycloheximide (0.1 mm) or sodium acetate (0.05 m) inhibits protein synthesis; if the incubation period immediately precedes the opening phase, these compounds prevent both K+ flux into the ventral motor cells and leaflet opening. Magnesium nitrate (0.05 m), supplied after leaflets have started to open, promotes K+ secretion from the dorsal motor cells and increases the angle of opening.

The data support the following hypothesis. Active K+ transport into the ventral motor cells and out of the dorsal motor cells leads to opening; K+ leakage in the opposite directions causes closure; and the interaction of these processes results in a rhythmic oscillation. Proteins in the ventral cell membranes that are required for active transport or membrane integrity turn over rhythmically and are resynthesized before opening. The availability of divalent cations determines the phase relationships between the K+ rhythms in the dorsal and ventral motor cells.

White light phases the rhythm. The “light on” signal turns on a K+ secreting pump in the dorsal motor cells, while the “light off” signal initiates a period of protein synthesis which in turn leads to active K+ transport into the ventral motor cells. Aminophylline (0.1-6.0 mm) inhibits white light-promoted opening and nyctinastic closure.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Applewhite P. B., Satter R. L., Galston A. W. Protein synthesis during endogenous rhythmic leaflet movement in Albizzia. J Gen Physiol. 1973 Dec;62(6):707–713. doi: 10.1085/jgp.62.6.707. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. BUTCHER R. W., SUTHERLAND E. W. Adenosine 3',5'-phosphate in biological materials. I. Purification and properties of cyclic 3',5'-nucleotide phosphodiesterase and use of this enzyme to characterize adenosine 3',5'-phosphate in human urine. J Biol Chem. 1962 Apr;237:1244–1250. [PubMed] [Google Scholar]
  3. Bünning E., Moser I. Influence of valinomycin on circadian leaf movements of Phaseolus. Proc Natl Acad Sci U S A. 1972 Sep;69(9):2732–2733. doi: 10.1073/pnas.69.9.2732. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Engelmann W. Lithium slows down the Kalanchoe clock. Z Naturforsch B. 1972 Apr;27(4):477–477. doi: 10.1515/znb-1972-0431. [DOI] [PubMed] [Google Scholar]
  5. Halaban R., Hillman W. S. Response of Lemma perpusilla to Periodic Transfer to Distilled Water. Plant Physiol. 1970 Nov;46(5):641–644. doi: 10.1104/pp.46.5.641. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Paul D. C., Goff C. W. Comparative effects of caffeine, its analogues and calcium deficiency on cytokinesis. Exp Cell Res. 1973 Apr;78(2):399–413. doi: 10.1016/0014-4827(73)90085-2. [DOI] [PubMed] [Google Scholar]
  7. Pittendrigh C. S. Circadian rhythms, space research and manned space flight. Life Sci Space Res. 1967;5:122–134. [PubMed] [Google Scholar]
  8. Pittendrigh C. S. Circadian surfaces and the diversity of possible roles of circadian organization in photoperiodic induction. Proc Natl Acad Sci U S A. 1972 Sep;69(9):2734–2737. doi: 10.1073/pnas.69.9.2734. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Satter R. L., Applewhite P. B., Kreis D. J., Galston A. W. Rhythmic Leaflet Movement in Albizzia julibrissin: Effect of Electrolytes and Temperature Alteration. Plant Physiol. 1973 Sep;52(3):202–207. doi: 10.1104/pp.52.3.202. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Satter R. L., Galston A. W. Phytochrome-controlled Nyctinasty in Albizzia julibrissin: III. Interactions between an Endogenous Rhythm and Phytochrome in Control of Potassium Flux and Leaflet Movement. Plant Physiol. 1971 Dec;48(6):740–746. doi: 10.1104/pp.48.6.740. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Satter R. L., Galston A. W. Potassium flux: a common feature of albizzia leaflet movement controlled by phytochrome or endogenous rhythm. Science. 1971 Oct 29;174(4008):518–520. doi: 10.1126/science.174.4008.518. [DOI] [PubMed] [Google Scholar]
  12. Satter R. L., Marinoff P., Galston A. W. Phytochrome-controlled Nyctinasty in Albizzia julibrissin: IV. Auxin Effects on Leaflet Movement and K Flux. Plant Physiol. 1972 Aug;50(2):235–241. doi: 10.1104/pp.50.2.235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Toriyama H., Jaffe M. J. Migration of Calcium and Its Role in the Regulation of Seismonasty in the Motor Cell of Mimosa pudica L. Plant Physiol. 1972 Jan;49(1):72–81. doi: 10.1104/pp.49.1.72. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Williams B. J., Pellett N. E., Klein R. M. Phytochrome control of growth cessation and initiation of cold acclimation in selected woody plants. Plant Physiol. 1972 Aug;50(2):262–265. doi: 10.1104/pp.50.2.262. [DOI] [PMC free article] [PubMed] [Google Scholar]

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