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- Title
Joint ecotoxicology of cadmium and metsulfuron-methyl in wheat ( Triticum aestivum).
- Authors
Lu, Yan; Liang, Lu; Yang, Hong
- Abstract
Herbicide is indispensable for crop production. However, substantial usage of herbicide has led to its increasing accumulation in soils and crops. In addition, cadmium has become one of the widely occurring contaminants in soils due to its significant release into environment via anthropogenic activities. In this study, ecotoxicological investigations were made by exposing the food crop wheat to joint contaminations of Cd and metsulfuron-methyl, a sulfonylurea herbicide. We analyzed growth and physiological and molecular responses in wheat exposed to 0.5 mg kg Cd and 0.02 mg kg metsulfuron-methyl (MSM). Soils contaminated with Cd and MSM complex caused significantly detrimental effect on wheat growth and physiological process. Combinative treatments with Cd and MSM damage more severely the plant cells as compared with Cd or MSM treatment alone. Compared with the growth parameter, the biochemical and molecular responses of wheat appeared more pronounced to Cd and MSM complex. Furthermore, compared with control, wheat plants exposed to Cd + MSM generated more Oand HO, both of which were shown to be the cause of enhanced activity of several antioxidant enzymes. Native polyacrylamide gel eletrophoresis and molecular response analyses were performed to validate the results indicated above. Our results indicated that joint contamination with Cd and MSM was more toxic to wheat than a single contamination. These sensitive biological parameters can be used as biomarkers monitoring the ecotoxicological process in plants.
- Subjects
POLLUTION; CADMIUM &; the environment; METSULFURON-methyl; COMPOSITION of wheat; HERBICIDES &; the environment; BIOMARKERS
- Publication
Environmental Monitoring & Assessment, 2013, Vol 185, Issue 4, p2939
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-012-2762-2