盐胁迫对小麦幼苗POD活性和同工酶的影响  

Effect of Salt Stress on Peroxidase and Isoenzyme in Wheat Seedlings

作　　者：宋旸[1] 裴冬丽[1] 

机构地区：[1]商丘师范学院生命科学系,河南商丘476000

出　　处：《湖北农业科学》2011年第9期1759-1761,共3页Hubei Agricultural Sciences

基　　金：河南省科技厅基础与前沿技术项目(082300430320);河南省科技发展计划国际合作项目资助(084300510076)

摘　　要：研究了0.4 mol/L氯化钠(NaCl)处理后4个河南广泛种植的小麦品种幼苗根和叶中过氧化物酶(POD)活性及其同工酶酶谱的变化情况。结果表明,4个小麦品种在盐胁迫处理后,根和叶中的POD活性均有不同程度的增强,且无论是对照还是盐胁迫处理,根中的POD活性都要高于其叶中的POD活性。POD同工酶酶谱在不同小麦品种间的不同组织中存在差异性,根中的POD同工酶酶带总体染色比叶中深;经盐胁迫处理后,根和叶中的酶带颜色均有不同程度的加深。The change of peroxidase（POD） isoenzyme zymogram and activity of POD in the roots and leaves of seedlings of four wheat varieties treated with 0.4 mol/L NaCl was studied.The results indicated that the zymogram of POD isoenzyme was different in different tissues of each wheat varieties.The zymogram showed deeper staining in roots than that in the leaves.After salt stress,some zymogram bands became deeper both in wheat roots and leaves,indicating that salt-stress could enhance the POD activity in roots and leaves.Moreover,POD activity in the roots was higher than that in the leaves,both in the control group and the salt-stress group.

关 键 词：盐胁迫 小麦 POD活性 同工酶 

分 类 号：S512.101[农业科学—作物学] Q945.78[生物学—植物学]