title: The influences of a lambda prophage on the growth rate of Escherichia coli.
abstract: A lambda prophage increases the competitive ability of E. coli K12 in a glucose-limited chemostat. This phenomenon does not involve the lambdarex gene. Expression of the lambdarex gene conditionally decreases fitness in two ways: (1) it causes malT- but not malT+ lysogens to be at a selective disadvantage in competition with non-lysogens. (2) During adaptation to slow, glucose-limited chemostat growth from rapid, glucose-excess flask growth, expression of the lambdarex gene transiently decreases the growth rate when compared to the non-lysogen.
mesh_terms: D010582:Bacteriophage lambda / Q000235:genetics*; D003470:Culture Media; D004926:Escherichia coli / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D005814:Genes, Viral; D005947:Glucose / Q000378:metabolism; D008242:Lysogeny; D008320:Maltose / Q000378:metabolism; D009154:Mutation
chemical_list: D003470:Culture Media; D008320:Maltose; D005947:Glucose