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Journal of Cell Science, Vol 26, Issue 1 151-160, Copyright © 1977 by Company of Biologists

JOURNAL ARTICLES

Synchrony in the rhythm of the contraction-relaxation cycle in two plasmodial strands of Physarum polycephalum

Y Takeuchi and M Yoneda

Rhythmicity of contraction of plasmodial strands of Physarum polycephalum was studied, by measuring the isometric tension exerted by isolated segments of the strands. When 2 strands were connected by way of a plasmodial mass, the contraction-relaxation cycle of the 2 strands synchronized. Such cycle activity of the strand was found to be well coordinated with shuttle streaming in the plasmodial mass which had been in connection with the strand. The presence of a control system which induces synchrony of periodic activity over the entire body of a plasmodium is discussed.




© The Company of Biologists Ltd 1977