Antioxidant response to metal pollution in Phragmites australis from Anzali wetland

• Published in: Marine pollution bulletin Vol. 119; no. 1; pp. 376 - 380
• Main Authors: Esmaeilzadeh, Marjan, Karbassi, Abdolreza, Bastami, Kazem Darvish
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 15.06.2017
• Subjects: Antioxidants; Anzali wetland; Catalase; Environmental Monitoring; Metals; Metals, Heavy - toxicity; P. australis; Peroxidase; Poaceae - drug effects; Poaceae - physiology; Water Pollutants, Chemical - toxicity; Wetlands; Peroxidase; P. australis; Catalase; Metals; Anzali wetland
• ISSN: 0025-326X; 1879-3363
• DOI: 10.1016/j.marpolbul.2017.03.030

This research was conducted to examine variations of antioxidant enzyme activity in Phragmites australis as a biomarker for metals such as As, Pb, Cu, and Cd. Samples of sediment and plants were collected from 7 stations located in Anzali wetland. Biochemical parameters including Catalase, Peroxidase and Ascorbate Peroxidase activity were analyzed in the roots, stems and leaves of P. australis. The obtained results indicated that there were significant differences among activities of antioxidant enzymes in three organs (p<0.05). Antioxidant enzyme activities in the organs for all studied stations were as the following order: stem<leaf<root. Overall, significant positive correlations were observed among concentrations of metals in sediments and activities of antioxidant enzymes in P. australis. As a result, it can be concluded from this study that antioxidant enzymes are good biomarkers reflecting metal contamination in sediments of Anzali wetland. •Metals were determined in surface sediments and Phragmites australis from Anzali wetland.•Catalase (CAT), Peroxidase and Ascorbate Peroxidase (APX) were analyzed in the roots, stems and leaves of P. australis.•Significant positive correlations were observed between metals in the sediments and activities of antioxidant enzymes.