Table 1.
The minimum inhibitory concentrations of tested antimicrobial agents for the studied bacterial isolates.
| Bacterial isolate1 | MICs (μg/ml)2 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| CST | PB | AMC | AZT | CAZ | GEN | TET | FFC | CHL | CIP | |
| R. ornithinolytica QDRO1 | 16 | 8 | 128/64 | 2 | 64 | >512 | >256 | >256 | >256 | 128 |
| T-QDRO1 | 16 | 4 | 32/16 | 2 | 16 | 0.25 | 0.5 | 4 | 4 | 0.004 |
| R. ornithinolytica QDRO2 | 8 | 4 | 128/64 | 8 | 32 | >512 | >256 | >256 | >256 | 128 |
| T-QDRO2 | 8 | 4 | 32/16 | 4 | 16 | 0.25 | 0.5 | 4 | 4 | 0.004 |
| R. ornithinolytica QDRO3 | 4 | 4 | 128/64 | 2 | 64 | >512 | >256 | >256 | >256 | 16 |
| R. ornithinolytica QDRO4 | 8 | 8 | 64/32 | 2 | 32 | >512 | >256 | >256 | >256 | 128 |
| R. ornithinolytica QDRO5 | 16 | 8 | 128/64 | 4 | 32 | >512 | >256 | >256 | >256 | 64 |
| R. ornithinolytica QDRO6 | 8 | 8 | 64/32 | 4 | 32 | >512 | >256 | >256 | >256 | 32 |
| R. ornithinolytica QDRO7 | 8 | 8 | 64/32 | 4 | 16 | >512 | >256 | >256 | >256 | 0.008 |
| R. ornithinolytica QDRO8 | 16 | 16 | 128/64 | 4 | 32 | >512 | >256 | >256 | >256 | 64 |
| R. ornithinolytica QDRO9 | 32 | 16 | 128/64 | 4 | 32 | >512 | >256 | >256 | >256 | 64 |
| R. ornithinolytica QDRO10 | 64 | 32 | 128/64 | 4 | 64 | >512 | >256 | >256 | >256 | 128 |
| R. ornithinolytica QDRO11 | 4 | 4 | 64/32 | 2 | 32 | >512 | >256 | >256 | >256 | 64 |
| R. ornithinolytica QDRO12 | 8 | 8 | 128/64 | 4 | 32 | >512 | >256 | >256 | >256 | 128 |
| R. planticola QDRP1 | 8 | 8 | 64/32 | 4 | 8 | >512 | >256 | >256 | >256 | 16 |
| R. planticola QDRP2 | 4 | 4 | 64/32 | 4 | 16 | >512 | >256 | >256 | >256 | 8 |
| R. terrigena QDRT1 | 2 | 2 | 32/16 | 4 | 8 | >512 | >256 | >256 | >256 | 0.016 |
1T-QDRO1 and T-QDRO2 represent the transconjugations of R.ornithinolytica QDRO1 and R.ornithinolytica QDRO2. 2Antimicrobial agents are abbreviated as follows: CST, colistin; PB, polymyxin B; AMC, amoxicillin-clavulanate; AZT, aztreonam; CAZ, ceftazidime; GEN, gentamycin; TET, tetracycline; FFC, florfenicol; CHL, chloramphenicol; CIP, ciprofloxacin. The bold numbers mean the isolates are resistant to the tested antimicrobial agent.