稀土微肥对盐胁迫下黄豆幼苗抗氧化酶的影响  

Effects of Rare Earth Elements on the Seedling of Soybean Antioxidant Enzymes under Salt Stress

作　　者：张美萍[1,2] 陕永杰[2,3] 江玉珍[1] 于光辉[1] 陈国祥[1] 

机构地区：[1]南京师范大学生命科学学院江苏省生物多样性与生物技术重点实验室,江苏南京210097 [2]山西师范大学生命科学学院,山西临汾041004 [3]南京大学地理与海洋科学学院,江苏南京210093

出　　处：《稀土》2009年第3期53-56,共4页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(30771229)

摘　　要：采用稀土微肥对盐胁迫下黄豆幼苗抗氧化酶活性的影响进行了研究。结果表明,随着盐浓度增加,黄豆幼苗的丙二醛(MDA)含量增多,细胞膜透性增大,抗氧化酶SOD、CAT的活性呈先上升后下降的趋势,POD呈逐渐上升趋势;与盐胁迫处理组相比,施用稀土微肥后的复合处理组SOD、CAT活性均增大,且活性最高峰向盐浓度增大的方向推移,POD活性、MDA均有所降低,细胞膜透性变小。说明稀土微肥对盐胁迫造成幼苗的损伤具有一定的修复作用。Effect of salinity stress on soybean seedling and the function of rare earth elements （REE） were studied. The results showed that under salinity stress, the content of MDA increased gradually. Activity of SOD and CAT increased and then decreased, peroxidedase （POD） activity increased; compared with the soybean seedling under salinity stress, after being treated by rare earth elements （REE）, the overall level of SOD activity and CAT activity were increased and the peak value of activity variation were moved forward to the direction of higher density while the POD activity reduced to some extent. It is obvious that REE can weaken the damage of soybean seedling caused by NaCl and has certain repair function to the injury of soybean ander salinity stress.

关 键 词：稀土 盐胁迫 黄豆 抗氧化酶 

分 类 号：S143.7[农业科学—肥料学] O614.33[农业科学—农业基础科学]