The effects of cadmium on germination and seedling growth of Suaeda salsa
Cadmium ion (Cd2+) is a ubiquitous toxic heavy metal in the environment and presents a potential threat to human health via the food chain through plant root uptake systems.The halophyte,Suaeda salsa is the pioneer plant in the Yellow River Delta and has been widely applied as a model plant in environmental pollution assessment.In this work,the study was conducted using a liquid culture with a series of Cd2+concentrations.Germination rates and activities of three enzymes (catalase (CAT),glutathione peroxidase (GPX),glutathione S-transferase (GST)) in the seedling were investigated.Results showed that the germination indices and growth inhibition indices of S.salsa decreased sigaificantly (p<0.05) at the concentration of 0.1mg/L CdCl2,and the inhibition effect was increased with the increasing concentration of Cd2+.GPX and GST changed similarly,which reached the maximum when Cd2+ was 0.1mg/L,then it declined sharply with the increasing concentration of Cd2+.However,for CAT,the reverse trend was observed.Overall,these results indicated that all the bio-indicators mentioned above for S.salsa were quite sensitive to Cd2+.It could be applied to monitor Cd2+ pollution in Yellow River Delta.
Cadmium Suaeda salsa germination enzyme
Sujing Liu Cuiyun Yang Wenjun Xie Chuanhai Xia Ping Fan
Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Bin Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Bin College of Chemistry, Liaoning University, Shenyang 110036, China
国际会议
The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))
北京
英文
293-298
2012-09-05（万方平台首次上网日期，不代表论文的发表时间）