群游期间变形杆菌细胞运动性的测量。

Measurement of Proteus cell motility during swarming.

作者信息

Douglas C W

出版信息

J Med Microbiol. 1979 May;12(2):195-9. doi: 10.1099/00222615-12-2-195.

Abstract

The motilities of Proteus long forms during swarming on agar were measured on cells transferred to liquid suspension. During concentric-ring formation on solid medium, when the edge of the swarm was advancing slowly or had stopped, the velocity of long-form motility was low. When the colony was spreading rapidly, long-form velocitywas relatively high. This periodic variation in cell velocity, which determines the zones formed during swarming, cannot adequately be explained by negative chemotaxis.

摘要

在琼脂上群体游动期间，变形杆菌长形菌体的运动性是在转移至液体悬浮液的细胞上进行测量的。在固体培养基上形成同心环的过程中，当群体边缘前进缓慢或停止时，长形菌体的运动速度较低。当菌落快速扩散时，长形菌体的速度相对较高。这种细胞速度的周期性变化决定了群体游动期间形成的区域，仅靠负趋化作用无法充分解释这一现象。