Table 3.

Iron regulation of β-galactosidase activity in B. cepacia pvdA and pvdD mutants

Strainβ-Galactosidase activity (Miller units), mean ± SDa
0 μM FeCl350 μM FeCl3P
K56-21.2 ± 0.78.9 ± 2.3NS
I1171,113 ± 3430 ± 9.5<0.001
T10523 ± 1041 ± 2.3<0.001
  • a Means ± the standard deviations of triplicate experiments. Experiments were performed twice with similar results. NS, not significant.