Phytotoxicity of cadmium on the physiological dynamics of Salvinia natans L. grown in macrophyte ponds.
The objective of this experiment is to study the potential ability of Salvinia natans L. to use in phytoassay for the cadmium toxicity in ecotoxicological studies. It is a simple and cost competitive method. The sensitivity of S. natans in terms of biochemical changes and enzyme activities to Cd2+ was remarkably noticeable. The catalase and protease activity was significantly decreased in the presence of cadmium, with increase of peroxidase and superoxide dismutase activity. The level of protein, carbohydrate and chlorophyll decreased and proline content increased in plants. The maximum permissible concentration of cadmium in different general water quality standards was evaluated and found that cadmium standard is not stringent enough.
Mohan
B S
BS
Department of Biotechnology, R.V. College of Engineering, Mysore Road, Bangalore - 560 059, India. mohanbettageri@yahoo.com
Hosetti
B B
BB
D001673:Biodegradation, Environmental; D001681:Biological Assay / Q000379:methods; D002104:Cadmium / Q000633:toxicity*; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002374:Catalase / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D029624:Ferns / Q000187:drug effects* / Q000201:enzymology; D005618:Fresh Water / Q000737:chemistry*; D010447:Peptide Hydrolases / Q000378:metabolism; D009195:Peroxidase / Q000378:metabolism; D010940:Plant Proteins / Q000378:metabolism; D013054:Spectrophotometry, Atomic; D013482:Superoxide Dismutase / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000633:toxicity*
D010940:Plant Proteins; D014874:Water Pollutants, Chemical; D002104:Cadmium; D002734:Chlorophyll; D002374:Catalase; D009195:Peroxidase; D013482:Superoxide Dismutase; D010447:Peptide Hydrolases