Zinc Oxide Nanoparticles Enhance the Tolerance and Remediation Potential of Bacillus spp. against Heavy Metal Stress

Figure 4

Effect of ZnO NPs (0, 5, 10, 15, 20, and 25 mg/L) on (a) superoxide dismutase, (b) peroxidase, (c) catalase of Bacillus cereus, (d) superoxide dismutase, (e) peroxidase, and (f) catalase of under heavy metal stress. Error bars show means of standard error (± S.E) of three replicates () followed by different alphabetic letters showing statistically significant at 5% probability level (ANOVA and Duncan’s multiple range test).