. 2012 Mar 29;7(3):e33210. doi: 10.1371/journal.pone.0033210

Table 3. Effect of EBL and/or Spd on protein content and specific activities of antioxidant enzymes in radish seedlings under Cr-stress.

Treatment	Protein(mg g⁻¹ FW)	GPOX(µmol min⁻¹ mg⁻¹ protein)	SOD(mol U mg⁻¹protein)	CAT(µmol min⁻¹ mg⁻¹ protein)	GR(µmol min⁻¹ mg⁻¹ protein)
Control	73.06±3.02^a	0.26±0.088^a	0.87±0.135^a	0.086±0.038^a	0.76±0.199^a
Cr	33.13±1.04^b	1.19±0.065^b	5.74±0.145^b	0.753±0.055^b	6.15±0.189^b
Cr+EBL	54.58±2.25^a	0.91±0.054^b	6.56±0.263^b	0.216±0.053^c	1.19±0.149^c
Cr+Spd	43.56±2.17^b	0.39±0.037^a	6.26±0.244^b	0.106±0.031^a	7.12±0.255^b
Cr+Spd+EBL	53.61±1.28^b	0.78±0.052^b§	8.92±0.015^c*§	0.375±0.005^c§	9.16±0.117^d*

Data are presented as mean ± SE. Different superscripted letters (a, b, c, d) within a column indicate significant difference from each other in all combinations (Tukey's test, p<0.05). Symbols “*” and “^§” indicate significant difference in a given column for EBL+Spd vs. EBL and Spd+EBL vs. Spd under Cr-stress, respectively (Tukey's test, p<0.05). GPOX, guaiacol peroxidase; SOD, superoxide dismutase; CAT, catalase; GR, glutathione reductase.