FIG. 5.
Comparison of digitized colony image intensities (detected after application of screening techniques 1 and 2), final cell densities, and Mn(IV) depletion after anaerobic growth on Mn(IV) by wild-type S. putrefaciens 200, anaerobic mutant T121, Mnr mutants 48-4 and 10-10, and the 11 Fer mutants. Values of image intensities are means of pixel intensities obtained from 10 individual colonies screened on separate plates (0.40-mm2 demarcated area per colony). Values for final cell densities and Mn(IV) depletion are means of three parallel but independent anaerobic growth experiments. Error bars represent standard deviations. All values were normalized to wild-type levels and expressed as percentages.