离子载体处理的多头绒泡菌原质团对外源Ca2+振荡的同步化。

Entrainment to external Ca2+ oscillation in ionophore-treated Physarum plasmodium.

作者信息

Miyake Y, Yano M, Tanaka H, Shimizu H

机构信息

Faculty of Pharmaceutical Sciences, University of Tokyo, Japan.

出版信息

Cell Struct Funct. 1992 Dec;17(6):371-5. doi: 10.1247/csf.17.371.

DOI:10.1247/csf.17.371

PMID:1295694

Abstract

To elucidate the mechanism of mutual interaction between intracellular chemical rhythms in the Physarum plasmodium, external Ca2+ oscillation was applied to the ionophore-treated plasmodial strand and its response was measured as tension oscillation. (i) Tension oscillation is entrained and phase locked to the externally applied Ca2+ oscillation. (ii) Two kinds of stable phase relationship, in-phasic and anti-phasic ones, are observed between them. (iii) Transition between the two stable phase relationships is also observed. These results suggest that intracellular rhythms with control tension generation are mutually entrained by means of cytosolic Ca2+ oscillation in the organism and that their interactions have two kinds of stable phase relationships.

摘要

为阐明黏菌原质团中细胞内化学节律之间的相互作用机制，将外部Ca2+振荡施加于经离子载体处理的原质团丝，并将其反应测量为张力振荡。(i) 张力振荡被外部施加的Ca2+振荡所夹带并锁相。(ii) 观察到它们之间存在两种稳定的相位关系，即同相和反相。(iii) 也观察到两种稳定相位关系之间的转变。这些结果表明，在生物体中，控制张力产生的细胞内节律通过胞质Ca2+振荡相互夹带，并且它们的相互作用有两种稳定的相位关系。