P. denitrificans MIC1-1T andProlixibacter sp. SD074 grew anaerobically at 25°C for 30 days under an atmosphere of N2:CO2 (4:1) in a 50-ml serum bottle containing either an Fe0 foil, a coupon of SS400 carbon steel, or a coupon of SUS316L stainless steel immersed in 20 ml of corrosion-test medium. The concentrations of oxidized iron in each culture at day 30 were determined. Data represent means and standard deviations (n = 3).