流体静压可逆地阻断草履虫中纤毛运动的膜控制。

Hydrostatic pressure reversibly blocks membrane control of ciliary motility in Paramecium.

作者信息

Otter T, Salmon E D

出版信息

Science. 1979 Oct 19;206(4416):358-61. doi: 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 ,80 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 membrane had been disrupted by Triton X-100.

摘要

仅68个大气压的流体静压力就能阻止游动的尾草履虫“避开”或改变方向；170个大气压会使向前游动的速度停止或降低超过75%。即使在80个大气压下，40个大气压的减压也会引发一次方向反转。相比之下，170个大气压对草履虫“模型”的游动行为没有显著影响，这些“模型”在其细胞膜被曲拉通X - 100破坏后，在含有三磷酸腺苷和镁离子的溶液中重新激活。