水杨酸对铅胁迫下潍县萝卜抗氧化酶活性的影响  

Effects of Salicylic Acids on Antioxidant Enzyme Activity of Weixian Radish under Pb Stress

作　　者：杜连彩[1] 

机构地区：[1]山东省潍坊市潍坊学院生物与农业工程学院/生物化学与分子生物学高校重点试验室,山东潍坊261061

出　　处：《安徽农业科学》2012年第2期828-829,877,共3页Journal of Anhui Agricultural Sciences

基　　金：山东省自然科学基金项目(Y2008D33);山东省自然科学基金项目(ZR2010CL011);山东省星火计划项目(2009XH053)

摘　　要：[目的]为缓解Pb污染造成的毒害和农业生态环境保护提供一定的理论依据。[方法]以潍县萝卜为材料,探讨外源水杨酸(SA)对铅胁迫下潍县萝卜直根抗氧化酶活性的影响。[结果]外源SA处理可以增加铅胁迫下萝卜直根中SOD和CAT活性,降低POD活性,减少MDA积累,减轻铅引起的氧化胁迫程度。[结论]100μmol/L SA处理缓解铅引起的氧化胁迫效果最好。[Objective] The research aimed to provide the theoretical basis for the remission of the harm caused by Pb contamination and the protection of agroecological environment.[Method] Weixian radish was tested by salicylic acids with different concentrations under Pb stress,and the effects of SA on antioxidant system of Weixian radish under Pb stress were studied.[Result] The exogenous SA could alleviate the oxidative stress caused by Pb stress through increasing the activity of SOD and CAT and reducing POD activity and MDA accumulation in its roots.[Conclusion] 100 μmol/L salicylic acid had the best relieving effect on the root of Weixian radish under Pb stress.

关 键 词：水杨酸 铅胁迫 潍县萝卜 抗氧化酶活性 

分 类 号：S19[农业科学—农业基础科学]