Ferrero R L, Lee A
School of Microbiology, University of New South Wales, Kensington, Australia.
J Gen Microbiol. 1988 Jan;134(1):53-9. doi: 10.1099/00221287-134-1-53.
The motility of four strains of Campylobacter jejuni in solutions of varying viscosity was measured and compared to that of a number of conventional rod-shaped bacteria (CRSB). All the bacteria tested showed an initial increase in velocity in the low viscosity solutions--between 1 and 3 centipoise (1 P = 0.1 Pa s). However, only the campylobacters were actively motile in highly viscous solutions with velocities ranging from 60 to 100 micron s-1. All strains of C. jejuni tested showed three separate peaks of motility as the viscosity of the solution was increased. A higher proportion of C. jejuni cells exhibited longer path lengths when the viscosity of the surrounding medium was increased from 1.4 to 57 cP. The findings of the study suggest that C. jejuni has a motility suited to movement in a viscous environment, and that this ability might provide the organism with an ecological advantage when in intestinal mucus. It is proposed that the mechanism of motility changes depending on the viscosity of the supporting environment.
测定了四株空肠弯曲菌在不同粘度溶液中的运动性，并与多种传统杆状细菌（CRSB）进行了比较。所有测试的细菌在低粘度溶液（1至3厘泊，1泊 = 0.1帕秒）中均表现出速度的初始增加。然而，只有弯曲菌在高粘度溶液中具有活跃的运动性，速度范围为60至100微米/秒。随着溶液粘度的增加，所有测试的空肠弯曲菌菌株均表现出三个独立的运动性峰值。当周围介质的粘度从1.4厘泊增加到57厘泊时，更高比例的空肠弯曲菌细胞表现出更长的路径长度。该研究结果表明，空肠弯曲菌具有适合在粘性环境中运动的运动性，并且这种能力可能在肠道黏液中为该生物体提供生态优势。有人提出，运动机制会根据支持环境的粘度而变化。
