RT Journal Article SR Electronic(1) A1 Maguire, Bruce A. A1 Deaves, Joanna K. A1 Wild, Donald G.YR 1989 T1 Some Properties of Two Erythromycin-dependent Strains of Escherichia coli JF Microbiology, VO 135 IS 3 SP 575 OP 581 DO https://doi.org/10.1099/00221287-135-3-575 PB Microbiology Society, SN 1465-2080, AB Strains of Escherichia coli can be isolated that require erythromycin for growth. With one strain, AM, a range of antibiotics, including chloramphenicol, tetracycline, spectinomycin, kasugamy-cin and rifampicin, will substitute for erythromycin on solid and in liquid media; nalidixic acid supports growth in liquid but not on solid media. With a second strain, 103, chloramphenicol, tetracycline and spectinomycin support growth in liquid media but on solid medium only chloramphenicol substitutes for erythromycin. In media of higher than normal ionic strength, strain AM, but not strain 103, can grow in the absence of antibiotics. Possible reasons for these complex phenotypes are discussed., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-135-3-575