Fig. 3

Cd(II) removal (a), and Cr(VI) (b) and Se(IV) (c) reduction by P. ferrarius CY1^T. Strain CY1^T was incubated in LB [for Cd(II) removal] or NA medium [for Cr(VI) and Se(IV) reduction] until OD₆₀₀ reach 0.6-0.7, and then amended with CdCl₂ (50 μmol/L),K₂CrO₄ (200 μmol/L) and Na₂SeO₃ (200 μmol/L), respectively. At designed times, culture samples were taken for measuring the residual concentration of Cd(II), Cr(VI) and Se(IV). Data are shown as the mean of three replicates, with the error bars represents ± SD