The effect of acid rain stress on membrane protective system of spinach and the conservation of rare earth elements
酸雨胁迫下,稀土元素对菠菜膜保护系统作用

Based on pot experiments, the effect of acid rain stress on membrane protective system of spinach and the conservation of rare earth elements were studied. The stress of acid rain resulted in decreases of overall levels of superoxide dismutase activity and catalase activity, and on increase of peroxidase activity. After being treated by rare earth elements, the overall level of superoxide dismutase activity and catalase activity were increase and the peak value of activity variation curve moved forward to the direction of higher acidity. POD activity only increased in a small scale, comparing with no treatment by rare earth elements under same acid rain conition, and the three important enzymes of membrane protective system could be kept on a relatively stable level. It concluded that rare earth elements could conserve membrane protective system from being affected by acid rain at the low acidity conditions.