TABLE 1.

Bacterial strains used in this study

P. aeruginosa strain	Description	Source and/or reference
PAO1	Wild-type strain, LPS smooth, serogroup O2/O5	M. Vasil
PAO1ΔaroA	aroA deletion mutant of PAO1	27
IT3	Wild-type strain, LPS smooth, serogroup O2/O5	11
IT3ΔaroA	aroA deletion mutant of IT3	This study
Habs16	Wild-type strain, LPS smooth, serogroup O2/O5	11
Habs16ΔaroA	aroA deletion mutant of Habs16	This study
170003	Wild-type strain, LPS smooth, serogroup O2/O5	11
170006	Wild-type strain, LPS smooth, serogroup O2/O5	11
170007	Wild-type strain, LPS smooth, serogroup O2/O5	11
IT7	Wild-type strain, LPS smooth, serogroup O2/O5	11
PAO6	Wild-type strain, LPS smooth, serogroup O6	1
6294	Clinical isolate (corneal infection), LPS smooth, noncytotoxic, serogroup O6	BPEIa,
PA14	Wild-type strain, LPS smooth, cytotoxic, serogroup O10	F. Ausubel
PA14ΔaroA	aroA deletion mutant of PA14	26
PA14 galU	galU transposon MAR2 × T7b insertion mutant, LPS rough with incomplete outer core	F. Ausubel 20
PA14 wbpM	wbpM transposon MAR2 × T7b insertion mutant, LPS rough with complete core	F. Ausubel 20
PA103	Wild-type strain, LPS smooth, cytotoxic, serogroup O11	J. Goldberg
PA103 galU	galU mutant of PA103 in which the galU gene is disrupted by an aacC1 cassette; Gmr	28
B312	Clinical isolate (blood), LPS smooth, cytotoxic, serogroup O11	R. Ramphal

^aBPEI, Bascom-Palmer Eye Institute, Miami, FL.

^bMAR2 × T7 (Gm^r) is a Himar1 derivative that originates from the eukaryotic mariner transposon family (20). Gm^r, gentamicin resistant.