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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >ASYMMETRY IN THE SELF-SUSTAINED OSCILLATION OF PHYSARUM PLASMODIAL STRANDS
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ASYMMETRY IN THE SELF-SUSTAINED OSCILLATION OF PHYSARUM PLASMODIAL STRANDS

机译：等离子体质子束的自持振荡中的不对称性

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摘要

The characteristics of the self-sustained oscillation in the plasmodial strand of Physarum polycephalum have been investigated in one steady and two transient conditions. An isolated Physarum strand changes its length periodically when it is suspended. In the behaviour of the self-sustained oscillation under the conditions, we provide the first demonstration that the changes in the periods of the oscillation can be ascribed to effects on the shortening phase, while the lengthening periods are almost unaffected. This result means that the asymmetric self-sustained oscillation of the Physarum strand is composed of an active contracting process, presumably due to actin filaments and myosin-like molecules in the strand, and a passive lengthening process which is merely an extension of the strand under a load. [References: 16]
机译：在一种稳定和两种瞬时条件下，研究了多头草浆膜链中自持振荡的特征。一条孤立的链在悬吊时会定期更改其长度。在这种条件下的自持振荡行为中，我们提供了第一个证明，即振荡周期的变化可以归因于对缩短相位的影响，而延长周期几乎不受影响。这个结果意味着，a链的不对称自持振荡由主动收缩过程（可能是由于肌动蛋白丝和肌球蛋白样分子在链中）和被动延长过程组成，后者仅仅是链在以下情况下的延伸负载。 [参考：16]

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