Hydrostatic Pressure Reversibly Blocks Membrane Control of Ciliary Motility in Paramecium
- 19 October 1979
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 206 (4416) , 358-361
- https://doi.org/10.1126/science.482945
Abstract
A hydrostatic pressure of only 68 atmospheres prevented swimming Paramecium caudatum from "avoiding" or reversing direction; 170 atmospheres stopped or decreased forward velocity by more than 75 percent. A decompression of 40 atmospheres invoked a single reversal, even at 280 atmospheres. In contrast, 170 atmospheres did not significantly affect swimming behavior of paramecium "models" that were reactivated in a solution containing adenosine triphosphate and magnesium ions after their membranes had been disrupted by Triton X-100.Keywords
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