NaCI胁迫对塔里木河下游罗布麻抗性酶的影响  

Effect of NaCI stress on antioxidant enzymes of Poacynum hendersonii in the lower reaches of Tarim River,Xinjiang,China

作　　者：史小丽[1] 叶茂[1,2] 王晓峰[1,2] 龚君君[1] 

机构地区：[1]新疆师范大学地理科学与旅游学院,乌鲁木齐830054 [2]自治区重点实验室,干旱区湖泊环境污资源实验室,乌鲁木齐830054

出　　处：《干旱区资源与环境》2011年第5期209-212,共4页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(3060009240971284);新疆维吾尔自治区高校科研计划青年教师科研启动基金(XJEDU2008S41);新疆师范大学校级博士科研启动基金(XJBS200706),新疆师范大学研究生科技创新基金项目(20101209)的资助

摘　　要：研究了不同盐浓度胁迫下罗布麻种子的抗性酶活性及含量。罗布麻种子萌发采用盐溶液水培方法,设0、0.05、0.1、0.2、0.3、0.4、0.5、0.6mol/L8个盐梯度。分析罗布麻丙二醛(MDA)、超氧化物歧化酶(SOD)和游离脯氨酸(Pro)三种酶的含量和活性随盐浓度的变化趋势。得出结论:MDA含量和SOD活性变化趋势大致相似,都是先上升后下降,在NaCI溶液浓度为0.3mol/L时达到最高值,Pro含量的变化规律不甚明显,但与对照组相比其含量增加。研究结果可为塔里木河下游受损生态系统的恢复和重建提供参考。In this research,we analyzed the contents and activity of antioxidant enzymes of Poacynum hendersonii under different salt sinkness stress.Seed germination of Poacynum hendersonii adopt salt solution by cultural way,0,0.05,0.1,0.2,0.3,0.4,0.5,0.6mol/L salt solutions were set to analyze the varied trends of MDA,SOD and Pro.The results showed with the salt thickness rising,the trends of contents of MDA and SOD activity are similar roughly,it presents the tendency of raise firstly and then decrease,there is maximum under 0.3mol/L salt stress,and Pro change content is not obvious,but its content is increasing comparing with the contrast standard（0 mol/L NaCl）.The study can provide reference for the damaged ecosystems＇ restoration in the Lower Reaches of Tarim River.

关 键 词：NACI胁迫 抗性酶 罗布麻 

分 类 号：Q946[生物学—植物学]