Table 3.

Correlation matrix for antioxidant enzyme activity and heavy metal concentrations in A. marina.

	Fe_PL	Mn_PL	Cu_PL	Zn_PL	Cd_PL	Cr_PL	Pb_PL	Ni_PL	CAT	GST	SOD
Fe_PL	1
Mn_PL	0.803**	1
Cu_PL	0.525	−0.061	1
Zn_PL	−0.344	−0.224	−0.213	1
Cd_PL	0.107	0.444	−0.564	0.193	1
Cr_PL	−0.353	−0.544	0.223	−0.429	−0.797**	1
Pb_PL	−0.258	−0.136	−0.282	0.012	0.031	0.351	1
Ni_PL	0.655**	0.734**	0.018	−0.007	0.504	−0.700**	−0.265	1
CAT	−0.386	−0.232	−0.33	0.202	0.09	0.276	0.957**	−0.317	1
GST	−0.378	−0.225	−0.314	0.341	0.096	0.158	0.918**	−0.229	0.965**	1
SOD	−0.417	−0.236	−0.377	0.21	0.097	0.279	0.957**	−0.337	0.997**	0.961**	1

Sd – Sediment.

PL – A. marina leaves.

^**Correlation is significant at the 0.01 level (2-tailed).