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Position: Home > Articles > Effects of Heavy Metals Stress on Physiological Responses of Sedum aizoon L. Northern Horticulture 2013 (21) 39-41

重金属离子胁迫对费菜生理生化指标的影响

作  者:
周晓慧;袁红艳;吴阳清;陆小平
单  位:
苏州大学金螳螂建筑与城市环境学院
关键词:
费菜;重金属离子;铜;铅;锌;生理响应
摘  要:
以景天科植物费菜为试材,采用人工水培技术,测定了Cu2+、Pb2+和Zn2+在费菜体内的转运和富集水平,以期为污染环境的植物修复提供理论依据。结果表明:费菜对水体中的重金属有较强的富集能力,当Cu2+的处理浓度大于240μmol/L时,铜的富集量达到了铜超富集植物水平;同样,当Pb2+浓度>960μmol/L时,地上部Pb2+含量出现饱和,约为730mg/kg,但地下部分Pb2+富集量一直处于增加,达到9 600~16 000mg/kg,当Zn2+浓度>1 500mg/kg时,地上部分Zn2+含量出现饱和,但地下部分Zn2+富集量一直处于增加状态。
译  名:
Effects of Heavy Metals Stress on Physiological Responses of Sedum aizoon L.
作  者:
ZHOU Xiao-hui;YUAN Hong-yan;WU Yang-qing;LU Xiao-ping;Gold Mantis School of Architecture and Urban Environment,Soochow University;
关键词:
Sedium aizoon L.;;heavy metal ions;;Cu2+;;Pb2+;;Zn2+;;physiological response
摘  要:
Taking Sedium aizoon of Crassulaceae cultured by artificial hydroponic technology as materials,the level of Cu2+,Pb2+ and Zn2+ transportation and accumulation in aizoon were determined,in order to provide new plant material for repairing polluted environment.The results showed that aizoon had a stronger ability of accumulating heavy metals in polluted waters.When Cu2+ concentration was more than 240μmol/L,the enrichment ability of copper had reached to the level of hyper accumulation-plant did.Similarly,when Pb2+ concentration was more than 960μmol/L,the aboveground part saturated,and the concentration was about 730mg/kg.However,the Pb2+concentration of underground part was increasing on the way,and the concentration was 9 600~16 000mg/kg.When Zn2+ was more than 1 500mg/kg,the aboveground part saturated,but underground part was in a state of increasing.

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