Full text loading...
Abstract
A variant of Caulobacter crescentus cb15, strain GU1, was isolated on the basis of its resistance to phage ϕCbK. Strain GU1 was also resistant to phages ϕCb12r and ϕCb13, developed filaments in liquid culture and showed altered sensitivity to the inhibitors methylene blue, sodium deoxycholate and ampicillin. Analysis by sodium dodecyl sulphate-polyacrylamide gel electrophoresis of the membranes of strains cb15 and gu1 showed major differences. Partial revertants of the gu1 phenotype were isolated in which only the inhibitor sensitivities were changed. The origin of these partial revertants was investigated by the fluctuation analysis of Luria & Delbruck (1943) . The results suggest that these partial revertants, which were stably inherited, were non-random in origin.
- Received:
- Published Online: