TABLE 3.

Motility assays

StrainSwim zone (mm)aTwitch zone (mm)a
WT18.8 (0.2)10.0 (0.7)
sad-160::Tn511.6 (0.5)9.4 (0.5)
ΔsadRS::Gmr20.2 (2.9)10.0 (0.9)
ΔsadR19.4 (0.9)11.0 (0)
ΔsadA19.5 (0.3)7.2 (0.2)
pilANDb0
flgK0ND
  • a Values are means of measurements of motility zones taken after 24 h at 37°C. The number in parentheses indicates the standard deviation for measurements of at least three plates per strain.

  • b ND, not determined.