文献类型：期刊文章

作　　者：高宇霞[1] 韩榕[1]

机构地区：[1]山西师范大学生命科学学院细胞工程研究所,山西临汾041004

出　　处：《Agricultural Science & Technology》

基　　金：Supported by National Natural Science Foundation of China(No.30671061);Natural Science Foundation of Shanxi Province(No.2008011059-1 and No.20041101)~~

年　　份：2010

卷　　号：11

期　　号：3

起止页码：15-19

语　　种：中文

收录情况：CAB、CAS、CSA、CSA-PROQEUST、PROQUEST、普通刊

摘　　要：[Objective] Effects of different concentrations of nitric oxide on membrane lipid peroxidation of wheat induced by enhanced UV-B radiation were researched,sodium nitroprusside （SNP） was selected as an exogenous nitric oxide（NO）donor.[Method] There are 3 groups including CK,UV treatment group （B）,B＋SNP treatment group,0,1,2,3,4 d sampling after treatment respectively,and physiological and biochemical indexes of MDA content and CAT,POD,SOD and so on were determined,repeated 3 times,and statistical analyzed.[Result] The results showed that,after the enhanced UV-B radiation,activity of the catalase （CAT）,superoxide dismutase （SOD） and of the guaiacol peroxidase （POD） all reduced apparently,and the concentration of malondialdehyde （MDA） increased obviously,leading to oxidative damage in wheat seedlings.Impose different concentrations of SNP after UV-B radiation,may mitigate oxidative damage of wheat seedling from different degrees,which was in agreement with the effect of making the concentration of MDA decrease and the activity of the CAT,SOD and POD all increased.The mitigation role of 0.01 mol/L SNP was more obvious for roots＇ oxidative damage,while 0.1 mmol/L SNP is more effective for oxidative damage of leaves.[Conclusion] Exogenous NO donor SNP had obvious relieve effects on oxidative damage of wheat seedlings caused by UV-B radiation,which can enhance adaptive capacity of plants to adversity stress.

关 键 词：WHEAT Ultraviolet-B radiation  Nitric oxide  Membrane lipid peroxidation  

分 类 号：S512.1]