TABLE 1.

Bacterial strains and plasmids used in this study

Strain or plasmidRelevant characteristicsPhenotypeSource or reference
P. aeruginosa
PAO1Wild typeWild typeB. H. Holloway
PAO-JP1 lasI::tetLasIPearson et al. (36)
PAO230 lasB::lacZWild-type PAO1H. P. Schweizer
PAO220 rhlA::lacZWild-type PAO1H. P. Schweizer
PA14Wild typeWild typeO'Toole and Kolter (32)
PA257 flgK::tetFlgK, nonmotileO'Toole and Kolter (32)
P. putida
ATCC 39168Wild typeWild typeSauer and Camper (47)
Plasmids
pRP9-1 GFP Constitutive GFP expressionDavies et al. (9)