. 2012 Nov 20;13(11):15321–15342. doi: 10.3390/ijms131115321

Table 6.

Ascorbate peroxidase (APX), catalase (CAT) and superoxide dismutase (SOD) of L. pumila under different potassium fertilization regimes.

Potassium levels (Kg K/ha)	Ascorbate peroxidase activity (APX; mg protein⁻¹ min⁻¹)	Catalase activity (CAT; μmol mg protein⁻¹ min⁻¹)	Superoxide dismutase activity (SOD; mg protein⁻¹ min⁻¹)
0	10.72 ± 0.21 ^a	171.24 ± 2.44 ^a	230.45 ± 2.36 ^a
90	8.74 ± 0.76 ^b	160.32 ± 1.23 ^b	196.72 ± 1.34 ^b
180	6.23 ± 0.45 ^c	110.34 ± 0.12 ^c	172.51 ± 1.87 ^c
270	3.44 ± 1.32 ^d	101.24 ± 0.23 ^d	136.24 ± 2.23 ^d

All analyses are mean ± standard error of mean (SEM). N = 40. Means not sharing a common letter within a column were significantly different at p ≤ 0.05.