摘要
选取4种水生植物水葱、芦苇、微齿眼子菜、金鱼藻为试验材料,对初始水质TN浓度为16.20±0.41mg·L-1,TP浓度为1.18±0.01mg·L-1的生活污水处理,分别在处理第30、60、90、120d时测定了其丙二醛含量、游离脯氨酸含量、可溶性糖含量和可溶性蛋白质含量,研究了4种水生植物在污水胁迫下的生理生化特性。实验表明:植物在受到污水胁迫时通过调节渗透,抑制质膜过氧化以适应污水环境,但不同植物的生理生化特性存在差异。其中,水葱和芦苇在受到污水胁迫后游离脯氨酸、可溶性糖含量迅速上升,有效抑制质膜过氧化,耐污染能力优于试验中的两种沉水植物微齿眼子菜和金鱼藻。
his study selects four Species of aquatic plants Scirpus validus,Phragmites australis, Potamogeton maackianus and Ceratophyllum demersum as test material,and treats them respectively by sewage which initial TN concentration is 16.20 ± 0.41 mg o L-1 and TP concentration is 1.18 ± 0.01 mg o L-1. And then it measures the MDA content,free proline content and soluble sugar and soluble protein content while treating 30,60,90,120d,in order to study the physiological and biochemical characteristics of the four aquatic plants in the water under the stress of sewage. The results show that the plants accommodate the sewage environment by adiusting the penetration and inhibiting the peroxidation of plasma membrane when they confront sewage stress,and there are different response characteristics of different plants. Of which, the contents of free proline,soluble sugar of Scirpus validus and Phragmites australis rise rapidly when stressed by sewage,which can effectively inhibit the peroxidation of plasma membrane. Therefore, their anti-pollution abilities are better than those of Potamogeton maackianus and Ceratophyllum demersum.
出处
《绿色科技》
2013年第5期52-55,共4页
Journal of Green Science and Technology
关键词
水生植物
生活污水
生理生化特性
aquatic plants
household sewage
Physiological and Biochemical Properties
