. 2020 Sep 18;11:2091. doi: 10.3389/fmicb.2020.02091

TABLE 4.

Antioxidant enzyme activity in wheat seedlings treated with Nocardioides sp. and bacterial culture filtrate extract (BCFE) under varying salinity stress conditions.

		Catalase^a		Superoxide dismutase^b		Peroxidase^c		Ascorbate peroxidase^d
EC (dS m^–1)	Treatment	Shoot	Root	Shoot	Root	Shoot	Root	Shoot	Root
0	Nocardioides sp.	0.022 ± 0.001^e	0.020 ± 0.001^b	15.80 ± 1.16^e	5.51 ± 0.63^e	0.038 ± 0.001^bc	0.056 ± 0.002^b	0.122 ± 0.007^bc	0.126 ± 0.006^cd
5		0.030 ± 0.001^c	0.013 ± 0.001^e	20.74 ± 0.98^c	8.56 ± 0.88^cd	0.035 ± 0.001^cd	0.052 ± 0.002^c	0.127 ± 0.005^b	0.139 ± 0.011^c
10		0.024 ± 0.001^d	0.017 ± 0.001^c	18.89 ± 0.94^d	13.62 ± 0.49^b	0.039 ± 0.001^bc	0.047 ± 0.002^d	0.125 ± 0.008^bc	0.115 ± 0.010^d
0	BCFE	0.027 ± 0.001^b	0.032 ± 0.001^a	22.64 ± 1.35^b	9.06 ± 1.48^cd	0.041 ± 0.005^ab	0.071 ± 0.002^a	0.134 ± 0.016^b	0.180 ± 0.012^a
5		0.039 ± 0.001^a	0.018 ± 0.001^c	23.46 ± 0.60^b	9.78 ± 1.16^c	0.044 ± 0.004^a	0.072 ± 0.002^a	0.187 ± 0.008^a	0.135 ± 0.007^c
10		0.039 ± 0.001^a	0.015 ± 0.001^d	25.48 ± 0.63^a	17.09 ± 0.85^a	0.043 ± 0.002^a	0.054 ± 0.002^bc	0.136 ± 0.007^b	0.159 ± 0.008^b
0	Control	0.019 ± 0.001^f	0.013 ± 0.001^de	11.57 ± 0.91^f	3.47 ± 0.74^f	0.032 ± 0.003^d	0.038 ± 0.002^e	0.101 ± 0.006^d	0.100 ± 0.007^e
5		0.020 ± 0.002^f	0.012 ± 0.001^e	14.95 ± 1.67^e	7.47 ± 2.04^d	0.032 ± 0.003^d	0.044 ± 0.005^d	0.112 ± 0.011^cd	0.077 ± 0.005^f
10		0.020 ± 0.001^ef	0.013 ± 0.001^e	15.46 ± 2.25^e	8.47 ± 1.01^cd	0.032 ± 0.003^d	0.016 ± 0.002^f	0.122 ± 0.006^bc	0.093 ± 0.007^e
Mean square error		1.30E-006	1.14E-006	1.610	1.277	7.23E-006	4.09E-00	7.97E-005	7.25E-005
R²		0.983	0.976	0.941	0.939	0.794	0.998	0.895	0.946

Values in the same data series represented by different letters are significantly different (p = 0.05) in Duncan’s multiple-range test. ^aMillimolar of H₂O₂ reduced per milligram of protein per minute. ^bUnits of enzyme per milligram of protein. ^cSpecific enzyme activity per milligram of protein. ^dMillimolar of ascorbate reduced per milligram of protein per minute.