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. 2004 May;72(5):2850–2857. doi: 10.1128/IAI.72.5.2850-2857.2004

FIG. 3.

FIG. 3.

Effect of orbA and fptA mutations on growth in the presence of siderophores. Cultures were grown in iron-deficient TSB-DC medium containing either 10 μg of pyochelin (pch) or ornibactin (orn)per ml or no additions. (A) Comparison of growth rates of Pc715j and Pc715jorbA::tp. (B) Comparison of growth rates of K56-2 and K56orbA::tp. (C) Comparison of growth rates of Pc715j and Pc715jfptA::tp. Optical density (OD) was determined at various intervals. Values are the means ± standard deviations for triplicate assays.