NaCl胁迫对中华补血草活性氧清除能力的影响  

Effects of NaCl Stress on the Scavenging Activity of Limonium sinense Kuntze to Reactive Oxygen Species

作　　者：张侠[1] 尹海波[1] 陈世华[1] 李丽霞[1] 赵吉强[1] 郭善利[1] 

机构地区：[1]烟台大学生命科学学院,山东烟台264005

出　　处：《安徽农业科学》2012年第21期10837-10839,共3页Journal of Anhui Agricultural Sciences

基　　金：山东省科技攻关计划资助项目(2010GNC10937);山东省自然科学基金青年基金资助项目(ZR2011 CQ013);烟台大学博士启动基金资助项目(TM09B25;HX10B23)

摘　　要：[目的]探讨NaCl胁迫对中华补血草活性氧清除能力的影响。[方法]用500 mmol/L NaCl对中华补血草进行处理,分别测定叶片渗透势,MDA含量以及过氧化氢酶(CAT)、过氧化物酶(POD)和超氧化物歧化酶(SOD)的活性。[结果]MDA含量能维持较低水平,但在处理5 d时达到最高点,而3种抗氧化酶活性呈先升高后下降的趋势,在处理的第5天降至最低,与MDA含量测定结果一致。[结论]补血草在短时间NaCl处理时能依靠抗氧化酶系统及时清除活性氧,减少氧化损伤,维持生长。[Objective] To discuss the effects of NaCl stress on the scavenging activity of Limonium sinense Kuntze to reactive oxygen species（ROS）.[Method] After L.sinense seedlings were treated by 500 mmol/L NaCl,the osmotic potential of leaves,content of MDA,and activities of catalyses（CAT）,peroxidase（POD）,superoxside dismutase（SOD） were investigated.[Result] The content of MDA maintained a relatively low level,while it reached the maximum value after treatment for 5 days.The antioxidase activities increased first and then decreased,and reduced to the minimum level after treatment for 5 days,which was consistent with the results of MDA content.[Conclusion] Depending on antioxidant enzyme system,L.sinense could scavenge reactive oxygen species,reduce oxidative damage and maintain growth during a short period under NaCl stress.

关 键 词：补血草(Limonium sinense Kuntze) 活性氧 NACL胁迫 

分 类 号：S567[农业科学—中草药栽培]