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Abstract
SUMMARY: The prophage ϕC31 was shown to be a genetic determinant of lysogeny in Streptomyces coelicolor A3(2). In mapping experiments with strains cured and relysogenized with mutant phages the prophage was located on the Streptomyces chromosome.
Allele ratios of non-selected markers for crosses between lysogenic and non-lysogenic derivatives of A3(2) differ strikingly from those of crosses between non-lysogenic parents. It is suggested that these differences are due to the loss of certain recombinant classes containing the complete chromosome of the non-lysogenic parent and a fragment from the lysogenic one, as a result of zygotic induction.
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© Society for General Microbiology 1973