硒盐胁迫对拟南芥耐硒突变体和野生型抗氧化酶类活性的影响

Effects of Selenium Salt Stress on Activities of Antioxidant Enzymes in Selenium-tolerant Mutant and Wild Type of Arabidopsis thaliana

研究了硒盐胁迫对拟南芥耐硒突变体和野生型抗氧化酶类活性的影响,发现在高浓度硒胁迫下,植物体内的谷胱甘肽过氧化物酶(GSH-Px)、超氧化物歧化酶(SOD)、过氧化物酶(POD)的活性均升高,而且拟南芥耐硒突变体58(5)中这几种酶的活性均明显高于野生型拟南芥WT中的。说明突变体58(5)具有较强的耐硒特性。

The effects of selenium salt stress on the activities of antioxidant enzymes in selenium -tolerant mutant 58（5） and wild type WT of Arabidopsis thaliana were researched .It was found that：under the stress of high concentration of selenium salt , the activities of GSH-Px, SOD and POD in the plants of Arabidopsis thaliana all increased , and the activities of these antioxidant en-zymes in 58（5） were obviously higher than those in WT .The above results indicated that selenium -tolerant mutant 58（5） of Ara-bidopsis thaliana had stronger tolerance to selenium .