Table 3.

Antimicrobial susceptibilities of S. maltophilia KJ, its chloramphenicol-selected mutant KJ09C, and their derived constructs

StrainMIC (μg/ml)a
CHLQuinolonesTetracyclinesAminoglycosidesERY
NALMXFTETDOXKANGENTOB
KJ880.0941612561,02451264
KJ09C1282560.256426425625664
KJΔ5880.0941612561,02451264
KJ09CΔ58160.09416212851251264
KJ09CΔRv880.09416125651251264
KJ09CΔU11282560.383226451212864
KJ09CΔVW440.047160.56425625664
KJ09CΔU232640.193223212812864
KJ09CΔX32320.0643225121,02451264
KJ09CΔ5b880.09416212851251264
KJ09CΔ5L2::U1b880.09416212851251264
KJ09CΔ5L2::U2b880.12516225651251264
KJ09CΔ5L2::Xb440.06481832864
  • a CHL, chloramphenicol; NAL, nalidixic acid; MXF, moxifloxacin; TET, tetracycline; DOX, doxycycline; KAN, kanamycin; GEN, gentamicin; TOB, tobramycin; ERY, erythromycin.

  • b Mueller-Hinton agar contains 30 μg/ml cefoxitin, in addition to the antibiotic indicated.