Table 1.
Bacterial strains used in this study
| Strain | Resistancea | Genotypeb |
Source or reference | ||
|---|---|---|---|---|---|
| cadA1 | cadA2 | bcrABC | |||
| Donor strains | |||||
| L. innocua | |||||
| L0910 | Cdr | – | – | – | This study |
| L1214B | Cdr | + | – | – | This study |
| L1306A | Cdr | + | – | – | This study |
| CLIP 11262 | Cdr | – | + | – | 16 |
| L1221 | Cdr BCr | – | + | + | This study |
| L1333a | Cdr | – | + | – | This study |
| L0921 | Cdr | + | – | – | This study |
| L. welshimeri | |||||
| L0725 | Cdr BCr | – | + | + | This study |
| L1325 | Cdr BCr | – | + | + | This study |
| L0918 | Cdr BCr | – | + | + | This study |
| L0926 | Cdr BCr | – | + | + | This study |
| Recipient strains | |||||
| L. innocua | |||||
| L1206S | Strr | – | – | – | This study |
| L. welshimeri | |||||
| L1316S | Strr | – | – | – | This study |
| L0927S | Strr | – | – | – | This study |
| L. monocytogenes (serotype) | |||||
| 1/2a3 (1/2a) | Strr | – | – | – | 22 |
| 10403S (1/2a) | Strr | – | – | – | 37 |
| 2381L (4b) | Strr | – | – | – | 39 |
| 2857S (1/2a) | Strr | – | – | – | This study |
| 2858S (1/2b) | Strr | – | – | – | This study |
a
Cdr, BCr, and Strr indicate resistance to cadmium, BC, and streptomycin, respectively, determined as described in Materials and Methods.
b
Determined by PCR with the respective primers as described in Materials and Methods.