Table 2. List of primers used in this study.
| Gene | Primer | Sequence | Length | Annealing Temp |
| pnp1A | GntR+11 | GTGCTGTCGATACAGACGGCGCAT | 24 | 68.0 |
| GntR-700 | GACGTGATCCTGCGGGCTTACTGTC | 25 | 69.5 | |
| pnp1C | 07851+59 | GCAAGCTCAACCGTAGGATATTCTC | 25 | 64.6 |
| 07851-680 | AATTAGACTGTCAAGAGAGAATGGT | 29 | 66.0 | |
| pnp1D | Carb+64 | ACAAGCACTGAGCAGCCCGTCAGC | 25 | 69.5 |
| Carb-836 | TGCAGCATCAGTGACTGGTGAGAGA | 25 | 66.2 | |
| pnp1F | 07881+95 | GATCCGGGTGATGCGTGGCCAGAG | 25 | 72.8 |
| 07881-555 | TGAAACAGCGGTGATCCGGTTCGT | 25 | 66.2 | |
| mini-Tn5 transposon | npt-41 | AGCCGAATAGCCTCTCCACCCAAG | 24 | 68.0 |
| npt+772 | TTCGCAGCGCATCGCCTTCTATC | 23 | 66.3 |