水杨酸对废电池污染下玉米幼苗抗氧化系统的影响

Effects of Salicylic Acid on Antioxidant System of Maize Polluted by Used Batteries

采用不同质量浓度水杨酸（SA）处理玉米幼苗,研究了SA对废电池溶液胁迫下玉米幼苗抗氧化系统的影响。结果表明,废电池胁迫下,SOD和POD活性比对照分别降低了47.05%和59.38%,丙二醛（MDA）含量、电导率和脯氨酸含量升高,分别较对照高17.62%、17.62%、32.58%,显示出毒害效应;25~100 mg/L的外源SA处理,能使废电池溶液胁迫下玉米幼苗SOD及POD活性升高,MDA、电导率及脯氨酸含量下降,说明在一定浓度范围内,外施SA可以缓解废电池对玉米幼苗生长所造成的胁迫,且以SA质量浓度为100 mg/L效果最佳。

Effects of different concentration of salicylic acid（SA）on antioxidant system of maize seedling were studied under the stress of used batteries.The results showed that superoxide dismutase（SOD） and peroxidase（POD） avtivities decreased by 47.05% and 59.38%,respectively,and malonaldehyde（MDA）content,conductivity and proline content increased by 17.62%,17.62% and 32.58% respectively.The used batteries showed stress and toxic effects.25-100mg/L of SA promoted the SOD and POD activities,decreased conductivity,MDA and proline contents.The results indicated that within certain concentration scope,SA could weaken the injury of maize seedlings polluted by used batteries,and 100mg/L was an optimal concentration.