TABLE 2.
Pyocyanin production by P. aeruginosa
| Strain | Efflux genotype | Pyocyanin productiona | Cross-feeds OCR1b |
|---|---|---|---|
| K767 | Wild type | + | + |
| OCR1 | nalB | − | − |
| K784 | nalB | − | − |
| K1170 | nalB ΔmexAB-oprM | + | ND |
| K1171 | Wild type | + | ND |
| K1168 | nalB | − | ND |
| K1169 | nalB ΔmexAB-oprM | + | ND |
| PAO-JP1 | Wild type | − | − |
| PDO100 | Wild type | − | + |
a
Assessed visually following growth on L agar. +, produces pyocyanin; −, no pyocyanin produced.
b
The indicated strains were streaked at right angles to OCR1 on L agar, and production of pyocyanin by OCR1 was assessed as described above in the vicinity of the cross-streaked strain. +, cross-feeds OCR1; −, does not cross-feed OCR1; ND, not determined.