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Table 3 Antioxidant enzymes biomarkers in Chlorella sp. exposed to different paraquat concentrations

From: Multiple physiological response analyses aid the understanding of sensitivity variation between Microcystis aeruginosa and Chlorella sp. under paraquat exposures

  Paraquat (mg L−1)
0.00 0.10 0.20 0.50 1.00 5.00 10.00 30.00
MDA (U mg−1 protein) 1.68 ± 0.06 1.75 ± 0.15 1.96 ± 0.11 1.76 ± 0.02 3.32 ± 0.70** 2.50 ± 0.05 2.15 ± 0.61 1.61 ± 0.10
CAT (U mg−1 protein) 31.41 ± 2.10 36.22 ± 1.07 47.77 ± 5.29* 42.64 ± 2.43 50.16 ± 5.86* 52.45 ± 3.30** 65.85 ± 3.06** 91.03 ± 9.54**
SOD (U mg−1 protein) 82.46 ± 7.06 92.82 ± 1.53 124.89 ± 12.91* 104.36 ± 4.62 120.30 ± 9.73* 131.93 ± 8.17** 135.59 ± 3.67** 189.08 ± 24.30**
  1. Average values ± SE (n = 3). *p < 0.05