Cadmium accumulation, activities of antioxidant enzymes, and malondialdehyde (MDA) content in Pistia stratiotes L.
The aquatic plant Pistia stratiotes L. (water lettuce) was studied due to its capability of absorption of contaminants in water and its subsequent use in wetlands constructed for wastewater treatment. The effects of Cd on root growth, accumulation of Cd, antioxidant enzymes, and malondialdehyde (MDA) content in P. stratiotes were investigated. The results indicated that P. stratiotes has considerable ability to accumulate Cd. Cadmium induced higher superoxide dismutase (SOD) and peroxidase (POD) activities than catalase activity, suggesting that SOD and POD provided a better defense mechanism against Cd-induced oxidative damage. The accumulation of Cd promoted MDA production.
Tianjin Key Laboratory of Cytogenetical and Molecular Regulation, College of Life Sciences, Tianjin Normal University, Tianjin, People's Republic of China.
Yong
Y
Li
Shanshan
S
Zhang
Wusheng
W
Jiang
Donghua
D
Liu
D000975:Antioxidants / Q000378:metabolism*; D029064:Araceae / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002104:Cadmium / Q000378:metabolism / Q000493:pharmacokinetics*; D002374:Catalase / Q000378:metabolism; D008315:Malondialdehyde / Q000378:metabolism*; D010544:Peroxidases / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development; D013482:Superoxide Dismutase / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000493:pharmacokinetics
D000975:Antioxidants; D014874:Water Pollutants, Chemical; D002104:Cadmium; D008315:Malondialdehyde; D010544:Peroxidases; D002374:Catalase; D013482:Superoxide Dismutase