Table 1.

Concentration of iron ligands in V0902 and V0110 in supernatant extracts of 200 ml of IDSM medium containing 0.1 μM Fe(III)

StrainMean siderophore content ± SDa as detected by:
CAS assayCsaky testArnow reaction
V09020.31 ± 0.15NDND
V0110 (induced)0.26 ± 0.110.16 ± 0.09
  • a Values are given as micromoles of ligand per gram (dry weight) of cells and represent the mean of three experiments. ND, not detected (i.e., the concentration was below the detection limit of the assay).