Table 4 Activity of enzymatic antioxidants in leaves of plants grown at varying salt stress for 48 h that were treated with 0.5 mM γ- aminobutyric acid (GABA) or left untreated.

From: γ-Aminobutyric Acid Imparts Partial Protection from Salt Stress Injury to Maize Seedlings by Improving Photosynthesis and Upregulating Osmoprotectants and Antioxidants

Treatment

Superoxide dismutase (U·g−1)

Peroxidase (U·g−1·min−1)

Catalase (U·g−1·min−1)

Ascorbate peroxidase (U·g−1·min−1)

0 mM NaCl

52.14 ± 1.94c

13.02 ± 0.77cd

15.11 ± 0.55b

20.47 ± 1.92c

150 mM NaCl

125.25 ± 4.38b

19.79 ± 2.04b

17.36 ± 0.79b

32.14 ± 2.67b

300 mM NaCl

31.47 ± 1.75e

8.41 ± 0.45e

10.74 ± 0.67d

10.34 ± 1.85e

0 mM NaCl + 0.5 mM GABA

54.57 ± 1.49c

14.12 ± 2.55c

14.74 ± 0.84bc

21.24 ± 1.76c

150 mM NaCl + 0.5 mMGABA

144.32 ± 3.58a

27.54 ± 1.88a

21.21 ± 1.76a

45.96 ± 2.44a

300 mM NaCl + 0.5 mMGABA

41.39 ± 2.01d

10.21 ± 1.15de

12.29 ± 0.63 cd

15.88 ± 1.20d

  1. Values are mean ± SE. Values with the same letters in a column are not significantly different at P = 0.05 (LSD test).
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