摘要
采用人工熏气方法研究HF污染条件下大豆（GlycinemaxL）和菜豆（Phaseolusvul－garisL）叶片中4种抗氧化酶的活性变化，结果表明它们对氧的敏感性差异很大：超氧化物歧化酶（SOD）最为敏感，抗坏血酸过氧化物酶（A－POD）和非特异性过氧化物酶（N－POD）次之，而过氧化氢酶（CAT）活性基本无变化。就两种供试植物而言，大豆的抗氧化酶对氟更为敏感；就植物生长阶段而言，开花期的抗氧化酶对氟的敏感性较苗期为大。在此基础上提出，氟污染环境中植物SOD、A－POD和N－POD的活性受抑与植物氟害有关。
Activity changes of 4 antioxidative enzymes in soybean(Glycine max L)and kidney bean(Phaseolus vulgaris L)leaves exposed to HF were studied with artificial fumigation. It showed that, there had been high difference in sensitivity to HF:Superoxide dismutase (SOD) was the most susceptible enzyme among them,followed by none-speciflc peroxidase(N-POD) and ascorbate spe cif ic peroxidase (A-POD) respectively. However,less change was observed in the activity of catalase (CAT) during fumigation. For 2 kinds of plants,the antioxidative enzymes in soybean were more fluoride-sensitive than in kidney bean. For the stages of plant's growth,these enzymes' activity in anthesis was inhibited more than that in seedlings. From these difference,it was proposed that ac tivity's loss of SOD、A-POD and N-POD caused by HF related to fluoride-induced injury in plants.
出处
《环境导报》
1997年第6期18-22,共5页
Environment Herald
关键词
氟化氢
大豆
菜豆
抗氧化酶活性
Hydrogen fluoride Superoxide dismutase Ascorbate-specific peroxidase None-specific peroxidase Catalase Soybean Kidney bean
