Tianjin Key Laboratory of Cytogenetical and Molecular Regulation, College of Life Sciences, Tianjin Normal University, Tianjin, People's Republic of China.
Environ Sci Pollut Res Int. 2013 Feb;20(2):1117-23. doi: 10.1007/s11356-012-1054-2. Epub 2012 Jul 13.
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.
水培植物水蕹菜（水浮莲）因其对水中污染物的吸收能力以及在用于处理废水的湿地中的后续应用而受到研究。本研究调查了镉对水蕹菜根生长、镉积累、抗氧化酶和丙二醛（MDA）含量的影响。结果表明，水蕹菜具有较强的镉积累能力。镉诱导的超氧化物歧化酶（SOD）和过氧化物酶（POD）活性高于过氧化氢酶活性，表明 SOD 和 POD 为应对镉诱导的氧化损伤提供了更好的防御机制。镉的积累促进了 MDA 的产生。
