Lanthanum- and cerium-induced oxidative stress in submerged Hydrilla verticillata plants

Shandong University of Technology College of Life Science Zibo 255049 China
Russian Journal of Plant Physiology (Impact Factor: 0.76). 09/2007; 54(5):693-697. DOI: 10.1134/S1021443707050184

ABSTRACT Oxidative stress was induced in 10-day treated with lanthanum and cerium Hydrilla verticillata plants. Low 10 μM concentrations did not exert harmful effects. The plants treated with higher concentrations showed higher
H2O2 content and lower chlorophyll and soluble protein contents as compared to control plants. At the same time, malondialdehyde
content rose with increasing concentrations of La and Ce. As La and Ce concentrations increased, superoxide dismutase and
catalase activities declined progressively, while peroxidase activity increased. Proline content decreased slightly at 10
μM La or Ce and then rose with higher concentrations. The results indicated that La and Ce caused oxidative damage as evidenced
by increased lipid peroxidation and decreased chlorophyll and protein levels.