磷缓解水鳖镉毒害的生理研究  

Physiological studies on poisoning effects of Cd on Hydrocharis asiatica through inhibition of Pi

作　　者：王娜[1] 陈国祥[1] 邵志广[1] 刘双[1] 吴国荣[1] 陆长梅[1] 

机构地区：[1]南京师范大学生命科学学院,南京210097

出　　处：《西北植物学报》2001年第6期1176-1181,共6页Acta Botanica Boreali-Occidentalia Sinica

基　　金：江苏省教育委员会高校科研项目 ( 1 999SWX0 0 0 0 SJ1 )

摘　　要：研究了 Cd对水鳖生理生化过程的影响及 Pi对 Cd胁迫的缓解作用。结果显示 ,Cd能抑制水鳖的代谢和生长 ,使叶绿素含量与光合速率下降 ,呼吸速率与可溶性糖含量增加 ,POD活性增强 ;当加入 0 .6 mmol/L Pi后 ,能相对减轻 Cd造成的毒害 ,表现出 Pi对The effects of Cd on Hydrocharis asiatica Miq and the function of Pi decreasing the stress of Cd were proved in this paper.The results showed that the growth and metabolism of Hydrocharis asiatica Miq were inhibited by Cd.The plant exhibited a decrease of the chlorophyll content,and the photosynthetic rate,an increasing of the respiration rate,the soluble sugar content and POD activity.When 0.6 mmol/L Pi was used once,the damage effects of Cd were reduced,which showed that Pi had the function of decreasing the stress of Cd.

关 键 词：水鳖 Cd毒害 PI 缓解作用 镉 重金属污染 水生植物 生态生理效应 

分 类 号：X503.23[环境科学与工程—环境工程] Q945.12[生物学—植物学]