Abstract
Induction of prophage λ in ultraviolet light sensitive ruv mutants of Escherichia coli K-12 was studied. When the ruv+ thy (λ) strain was starved for thymine, a maximum induction occurred after about 150min, whereas induction of the ruv thy(λ) strains reached the same level at about 90min. The number of infective centers in a ruv+tif (λ) strain reached a maximum at 60min after the temperature was raised to 42°C, whereas a maximum induction was achieved at 45min in the ruv tif (λ) strains. These results suggest that the ruv mutations affect the process of prophage induction in thy auxotrophs and in tif strains.
