PMID: 13563809Jul 20, 1958Paper

Rhythmicity in the protoplasmic streaming of a slime mold, Physarum polycephalum. II. Theoretical treatment of the electric potential rhythm

The Journal of General Physiology
U KISHIMOTO

Abstract

The electric potential difference (1 to 15 mv.) between two loci of the slime mold connected with a strand of protoplasm changes rhythmically with the same period (60 to 180 seconds) as that of back and forth protoplasmic streaming along the strand. When atmospheric pressure at a part of the plasmodium is increased (about 10 cm. H(2)O), the electric potential at this part becomes positive (0 to 20 mv.) to another part with a time constant of 2 to 15 minutes. If the atmospheric pressure at a part of the plasmodium is changed (about 10 cm. H(2)O) periodically, the electric potential rhythm also changes with the same period as that of the applied pressure change, and the amplitude of the former grows to a new level (i.e., forced oscillation). The electric potential rhythm, in this case, is generally delayed about 90 degrees in phase angle from the external pressure change. The period of the electric potential rhythm which coincided with that of the pressure change is maintained for a while after stopping the application of the pressure change, if the period is not much different from the native flow rhythm. Such a pressure effect is brought about by the forced transport of protoplasm and is reversible as a rule. In the statistical...Continue Reading

References

May 1, 1952·Journal of Cellular Physiology·A LOEWY
Jun 27, 1953·Nature·W SEIFRIZ
Jan 20, 1956·The Journal of General Physiology·P O TS'OJ VINOGRAD
May 20, 1956·The Journal of General Physiology·P O TS'OJ VINOGRAD
Sep 1, 1957·Biochimica Et Biophysica Acta·P O TS'OJ VINOGRAD

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Citations

Jul 20, 1959·The Journal of General Physiology·U KISHIMOTO, H AKABORI
Oct 1, 1959·Experimental Cell Research·P A STEWART, B T STEWART
Oct 22, 2015·Physical Chemistry Chemical Physics : PCCP·Jennifer E Satterwhite-WardenJames F Rusling
Sep 30, 2017·Integrative Biology : Quantitative Biosciences From Nano to Macro·Hagit Peretz-SorokaFrancis Lin
Mar 1, 1976·CRC Critical Reviews in Microbiology·W D Gray
Jan 27, 2012·Bioinspiration & Biomimetics·Jeff Jones, Andrew Adamatzky
Jul 1, 2014·Bioinspiration & Biomimetics·Jeff Jones, Andrew Adamatzky
Apr 23, 2021·Bio Systems·V N AlexanderÒscar Castro Garcia

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