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Autooscillations in Physarum plasmodium I. Correlation Between Force Generation and Viscoelasticity During Rhythmical Contractions of Protoplasmic Strand

1988; Springer Vienna; Linguagem: Inglês

10.1007/978-3-7091-9008-1_11

0934-8727

V. A. Teplov,

Plant and Biological Electrophysiology Studies

The method of quick release and stretch of the plasmodial strands was used to study their viscoelastic properties at different phases of contraction-relaxation cycle. The rheological behaviour of the strand on a time scale which is much shorter than the period of autooscillations is described in terms of a parallel combination of elastic component and Maxwell element. The stiffness and viscosity oscillate synchronously with cyclic tension production. The 10–20% stepwise stretching of the strand results in a rapid increase of the stiffness. The participation of mechanochemical system in cell oscillator is discussed.