Gene expression of motility defective mutants in Pseudomonas syringae pv. tabaci was investigated.
Flagella-defective mutants lost quorum sensing system.
Type IV pili (T4P)-defective mutant lost swarming motility.
Motility-defective mutants activate genes for multidrug efflux pump transporter.
Genes regulating flagella- and T4P-mediated motilities also regulate expression of other virulence-related genes.