Table 2.
Isolates used in this study for copper susceptibility testing. All reported minimum inhibitory concentration (MIC) values were determined under anaerobic conditions. MBC—minimum bactericidal concentration.
| Isolate | Bacteria | Serovar | pco | sil | Location (Similar to) | Broth MIC 1 | Broth MBC 1 | Agar MIC 1 |
|---|---|---|---|---|---|---|---|---|
| KSC9 | Escherichia coli | + | + | chromosome (IAI1) | 18 | 18 | 16 | |
| KSC64 | E. coli | + | + | chromosome (E24377A) | 18 | 18 | 16 | |
| KSC207 | E. coli | + | + | 278 kbp plasmid (pR478) | 18 | 18 | 16 | |
| KSC1031 | E. coli | + | + | 149 kbp plasmid (p1540) | 12 | 12 | 12 | |
| KSC27 | E. coli | − | − | 12 | 12 | 16 | ||
| KSC857 | E. coli | − | − | 12 | 12 | 16 | ||
| ATCC 25922 | E. coli | − | − | 12 | 12 | 16 | ||
| SA10689 | Salmonella | Senftenberg | + | + | unknown | 18 | 18 | 24 |
| SA12224 | Salmonella | Ouakam | + | + | unknown | 18 | 18 | 24 |
| SA13423 | Salmonella | Ouakam | + | + | unknown | 18 | 18 | 24 |
| SA82699 | Salmonella | Kentucky | − | − | 18 | 18 | 4 | |
| SA81917 | Salmonella | Kentucky | − | − | 12 | 18 | 4 | |
| SA82540 | Salmonella | Infantis | − | − | 12 | 18 | 4 | |
| SA81917-TC | Salmonella | Kentucky | + | + | plasmid from E. coli KSC207 | ND 2 | ND | 24 |
| SA82540-TC | Salmonella | Infantis | + | + | plasmid from E. coli KSC207 | ND | ND | 24 |
1 concentration in mM; MICs are averages of three complete biological replicates. 2 ND (not done).