Figure 1.

Physiological phenotypes of Synechocystis exbBD mutants. Cells were grown in BG11 medium under standard iron concentrations (Fe-replete) (a, c, e and f) or iron-deficient conditions, in which ammonium ferric citrate was replaced with ammonium citrate (Fe-deplete) (b and d). The growth characteristics (a and b), pigment content (c and d), cellular iron content (e) and short-term ⁵⁵Fe³⁺ uptake rate (f) were determined as previously described (Jiang et al., 2012).