Evaluation of antioxidant enzymes activities during phytoremediation of textile waste water exposed of structurally different dyes by some aquatic plants

The current study included invistigate a response of five aquatic plants used to removed some of the pollutants found in an industrial waste water disposed from Textile Industry. The study conducted in laboratory for a period of 13 days and the species of aquatic plants were Phragmites australis , Typha domingensis , Ceratopyllum demersum , Potamegatone Perfoliatus and Hydrilla varcillata in polyethylene contianor and with addition two azo dye ,Reactive blue , Reactive yellow and mixture of theme in three concentrations of 0.01, 0.02 and 0.03 mg / L in each of theme .chlorophyll and protein content was estimated, Malondialdehyde (MDA) and activity of catalase (CAT) and superoxide dismutase (SOD) enzymes were estimated , the result show a decrease in total chlorophyll in species Phragmites australis , Typha domingensis , Ceratopyllum demersum , Potamegatone Perfoliatus and Hydrilla varcillata while decrease in protein content in species Phragmites australis , Typha domingensis , Ceratopyllum demersum , Potamegatone Perfoliatus and Hydrilla varcillata .the study showed high content (MDA) during the period of the experiment (0.67-4.04) , (0.64-5.98) , (9.56-31.6) , (12.709-61.29) and (0.88-34.53) nmole/mg P. australis , T. domingensis , C. demersum , P. perfoliatus and H. varcillata respectively. and increasing the activity of (CAT) during the period of the experiment ranged (43.9-140.7) , (8.8-101.4) , (25.5-136.7) , (23.3-129.7) and (33.4-85.5) unit/mg for plants P. australis , T. domingensis , C. demersum , P. perfoliatus and H. varcillata respectively.and increasing the activity of (SOD) enzyme during the period of the experiment ranged (0.086-0.53) , (0.23-3.46) , (0.608-8.46) , (3.89-15.2) and (0.411-4.35) unit/mg for plants P. australis , T. domingensis , C. demersum , P. perfoliatus and H. varcillata respectively. this response were due to environmental stress for instance contaminants, by developing a complex antioxidant defense system against abiotic stress by aquatic plants . This study was conducted to determine the concentration of heavy metals(Fe, Cu, Zn, Ni, Cd, Cr and Pb) in canned tuna found in the local market of Hilla city, the results show that the concentarions of irons were above the limits and was ranged between 57.41 ppm to 101.55 ppm, while the concentration of copper was within the limits and was ranged between 5.43 ppm to 6.48 ppm, the concentration of zinc was also within the permited limits and was ranged between 17.5 ppm to 37.5, while all of nickel, cadmium, chromium and lead was not detected in all the samples.