TABLE 5

Competition of S. saprophyticus with preincubated X. nematophila in Grace's medium

StrainMean CFU/ml (SEM) (×108)
Initial cell densityaCell density after 24 hb
X. nematophilaS. saprophyticusX. nematophilaS. saprophyticus
WT25.5 (3.0)1.1 (0.1)7.9 (1.7)0.0
ΔxcnKL strain21.7 (2.1)1.1 (0.1)3.9 (0.8)0.0
F31.9 (4.4)1.1 (0.1)3.9 (0.4)0.0
ΔxcnKL:F strain32.7 (3.2)1.1 (0.1)1.4 (0.3)0.0
ngrA strain34.9 (4.7)1.1 (0.1)6.9 (0.9)3.8 (0.6)
  • a Cell density at start of competition after X. nematophila was preincubated for 10.5 h.

  • b Cell density after 24 h of competition.