Bridging a Gap between Cr(VI)-Induced Oxidative Stress and Genotoxicity in Lettuce Organs after a Long-Term Exposure

Table 1

Cr(VI) effect on lettuce shoot and root oxidative activity. Different letters indicate for the same parameter significantly different means (). Chromium (Cr), guaiacol peroxidase (GPX), ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), superoxide dismutase (SOD), malondialdehyde (MDA), and membrane permeability method (CMP).

Cr(VI); (mg/L)	GPX; (nKat.mg TSP^−1)	APX; (nKat.mg TSP^−1)	CAT; (nKat.mg TSP^−1)	GR; (nKat.mg TSP^−1)	SOD; (nKat.mg TSP^−1)	MDA; MDA equivalents; (nmol mL^−1 mgFM^−1)	CMP; (%MD)
	Shoot
0	0.58 ± 0.12	37.73 ± 4.61	1.91 ± 0.32	2.42 ± 0.10	982.47 ± 477.15	0.67 ± 0.34	14.37 ± 3.46
50	0.23 ± 0.10	46.84 ± 0.94	2.40 ± 0.13	1.85 ± 0.83	2062.51 ± 347.36	0.93 ± 0.17	19.37 ± 2.89
150	0.36 ± 0.03	47.89 ± 1.29	2.36 ± 0.35	2.82 ± 0.62	4252.10 ± 266.38	2.36 ± 0.25	29.00 ± 7.20
200	0.13 ± 0.02	48.00 ± 2.63	5.67 ± 1.21	3.36 ± 1.86	3029.70 ± 97.89	3.10 ± 0.37	74.13 ± 11.60
	Root
0	1.72 ± 0.49	33.46 ± 0.89	12.5 ± 2.24	14.10 ± 3.81	1057.84 ± 672.24	0.71 ± 0.24	12.60 ± 0.37
50	2.15 ± 0.63	55.05 ± 2.06	18.94 ± 4.92	24.29 ± 5.06	2349.10 ± 432.61	1.15 ± 0.48	19.75 ± 3.86
150	0.85 ± 0.03	37.39 ± 1.30	12.30 ± 2.16	17.06 ± 4.21	453.03 ± 39.10	2.72 ± 0.69	22.38 ± 5.32
200	0.91 ± 0.03	33.04 ± 3.35	62.28 ± 2.64	24.50 ± 1.09	725.25 ± 38.61	3.46 ± 0.12	89.81 ± 2.85