Changes in Growth and Antiozidant Enzymes Activities during Nickel Stress in Raphanus sativus L.

摘要：

The phytotoxicity imposed by nickel (Ni) and antioxidant enzyme responses of radish (Raphanus sativus L.) have been investigated. The plants were subjected to 0-60 mM NiCl2 and analyzed for growth, chlorophyll, protein, Fe and Zn contents and antioxidative enzyme activities in the shoots and roots. Exposure to NiCl2 caused higher Ni accumulation in the roots, decreased shoot and root dry weight and chlorophyll, protein, Fe and Zn concentrations. Peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) activities increased considerably in the roots and shoots after exposure to the metal. The results indicate a Ni toxicity for radish plants at the supplemented concentrations which followed by some stimulated enzymatic antioxidative responses to reduce the oxidative damages resulted from nickel absorption and translocation.

关键词： antiozidant enzymes catalase heavy metals nickel perozidase radish superozide dismutase

作者: Hakimeh ALIPOUR-DARVARY Mozafar SHARIFI Hassan ZARE-MAYVAN

作者单位: Department of Plant Biology,Faculty of Basic Sciences,Tarbiat Modares University,P.O.Box 14175-115,Tehran,Iran

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 392-396

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）