TABLE 1.
Bacterial strains and plasmids used in this study.
| Strains/plasmids | Genotypes or description | Source |
| E. coli Top10 | F–, Φ80lacZΔM15, ΔlacX74, recA1 | Invitrogen |
| E. coli DH5α | F–, Φ80lacZΔM15 Δ(lacZYA-argF), U169, recA1 | Invitrogen |
| pBR322 | AmpR, TetR, ori pMB1, commonly used E. coli cloning vector | Novagen |
| pUCm-T | TA cloning | Sangon |
| pBAD | AmpR, ori pBR322, containing araBAD promoter | Thermo Fisher Scientific |
| pT-RFP | pUCm-T carrying mCherry | Hui et al.,2018c |
| pPlac-lacZα | AmpR, ori pMB1, pBR322 derivative with lacZα peptide expressing under lac promoter | This study |
| pPlac-lacZ | pBR322 derivative with β-galactosidase expressing under lac promoter | This study |
| pPlac-RFP | pBR322 derivative with mCherry protein expressing under lac promoter | This study |
| pPara-lacZα | AmpR, ori pMB1, pBR322 derivative with lacZα peptide expressing under araBAD promoter | This study |
| pPara-lacZ | pBR322 derivative with β-galactosidase expressing under araBAD promoter | This study |
| pPara-RFP | pBR322 derivative with mCherry protein expressing under araBAD promoter | This study |
| pT-Ppbr | pUCm-T carrying pbrR and divergent pbr promoter region | This study |
| pPpbr-RFP | pPlac-RFP derivative with pbrR and pbr promoter preceding mCherry, a single RFP reporter system | This study |
| pPpbr-lacZα | pPlac-lacZα derivative with pbrR and pbr promoter preceding lacZα, a single lacZα reporter system | This study |
| pPpbr-lacZ | pPlac-lacZα derivative with pbrR and pbr promoter preceding lacZ, a single lacZ reporter system | This study |
The cloning/expression regions of recombinant plasmids used in this study are shown in Supplementary Figure S1.