TABLE 1.
Antibiotic susceptibilities of the 24 transconjugants and recipient Ra
| Strain | MIC (mg/liter) of:
|
PCR result for:
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| ERY | CLI | STR | CMP | VAN | TPL | QD | OTE | tetM | tetL | |
| T1 | >8 | >8 | 64 | 16 | ≤1 | ≤1 | >8 | 1 | ND | − |
| T2 | >8 | >8 | 64 | 16 | ≤1 | ≤1 | >8 | 1 | ND | − |
| T3 | >8 | >8 | >64 | ≤4 | >16 | 8 | >8 | 16 | − | + |
| T4 | >8 | >8 | >64 | ≤4 | >16 | 16 | >8 | 16 | − | + |
| T5 | >8 | >8 | 64 | ≤4 | >16 | 4 | 1 | ≤0.5 | ND | − |
| T6 | >8 | >8 | 32 | 8 | >16 | 16 | 1 | ≤0.5 | ND | − |
| T7 | >8 | >8 | >64 | ≤4 | >16 | >16 | >8 | 16 | − | + |
| T8 | >8 | >8 | >64 | ≤4 | >16 | >16 | >8 | 32 | − | + |
| T9 | >8 | >8 | 32 | 8 | >16 | >16 | 1 | ≤0.5 | − | − |
| T10 | 1 | 8 | 16 | ≤4 | >16 | >16 | 1 | ≤0.5 | − | − |
| T11 | >8 | >8 | 16 | ≤4 | >16 | 16 | 2 | ≤0.5 | − | − |
| T12 | >8 | >8 | 32 | ≤4 | >16 | 16 | 2 | ≤0.5 | − | − |
| T13 | >8 | >8 | 16 | 8 | >16 | >16 | 1 | ≤0.5 | − | − |
| T14 | 1 | ≤0.5 | 16 | ≤4 | >16 | 2 | 1 | 1 | − | − |
| T15 | 1 | ≤0.5 | 32 | 16 | >16 | >16 | 1 | 1 | − | − |
| T16 | >8 | >8 | >64 | ≤4 | >16 | >16 | 1 | ≤0.5 | − | − |
| T17 | >8 | >8 | >64 | 8 | ≤1 | ≤1 | >8 | 256 | + | + |
| T18 | >8 | >8 | >64 | 16 | ≤1 | ≤1 | >8 | 256 | + | + |
| T19 | >8 | >8 | >64 | 16 | ≤1 | ≤1 | >8 | 512 | + | + |
| T20 | >8 | >8 | >64 | 8 | ≤1 | ≤1 | >8 | 256 | + | + |
| T21 | >8 | >8 | >64 | 8 | >16 | 4 | >8 | 256 | + | + |
| T22 | >8 | >8 | >64 | 8 | 4 | ≤1 | >8 | 256 | + | + |
| T23 | >8 | >8 | >64 | 8 | 8 | ≤1 | 8 | 8 | − | + |
| T24 | >8 | >8 | >64 | 8 | >16 | 8 | >8 | 512 | + | + |
| R | ≤0.5 | ≤0.5 | 32 | ≤4 | ≤1 | ≤1 | 1 | ≤0.5 | − | − |
a
All transconjugants were susceptible to penicillin, ampicillin, ciprofloxacin, trimethoprim-sulfamerazine, and mupirocin. All were resistant to fusidic acid and rifampin. ERY, erythromycin CLI, clindamycin; STR, streptomycin; CMP, chloramphenicol; VAN, vancomycin; TPL, teicoplanin; QD, quinupristin-dalfopristin; OTE, Oxytetracycline; ND, not determined; +, present; −, absent.