Fig. 3

Activities of antioxidant enzymes like peroxidase (POD), glutathione reductase (GR), superoxide dismutase (SOD), and malonaldehyde (MDA) in B. braunii SAG 807-1 under cobalt enrichment treatment. Normal cobalt (control, 0.09 mg/L); high concentration cobalt (4.5 mg/L)