Table 1.

B. burgdorferi strains used in this study

StrainrpoS locusgyrBlocusCoumermycin A1phenotypeaReference
B31-AwtbwtSensitive45
B31-4AwtwtSensitive10
B31-NGRwtgyrBrResistant45
B31-A59wtgyrBrResistantThis study
B31-A74rpoS::gyrBrwtResistantThis study
B31-A29rpoS::gyrBrwtResistantThis study
  • a Coumermycin resistance was defined as the ability to grow in the presence of ≥0.5 μg of coumermycin A1 per ml in liquid or solid BSK.

  • b wt, wild type.