外源一氧化氮对梨叶片感染轮纹病菌后膜脂过氧化的影响  

Effects of exogenous nitric oxide donor on lipid peroxidation of pear leaves infected by Physalosproa pirico Nose

作　　者：刘招龙[1,2] 张绍铃[1] 孙益林[1] 

机构地区：[1]南京农业大学园艺学院 [2]宁德师范高等专科学校生物系,福建宁德352100

出　　处：《应用生态学报》2007年第7期1568-1572,共5页Chinese Journal of Applied Ecology

基　　金：江苏省农业科技攻关资助项目(BE2001324-2).

摘　　要：研究了0.3mmol·L-1一氧化氮供体硝普钠(SNP)对梨叶片感染轮纹病菌(Physa-lospora piricola Nose)后抗氧化酶及活性氧的影响.结果表明,经0.3mmo1·L-1SNP处理后,梨叶片过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、多酚氧化酶(PPO)活性及抗坏血酸(ASA)、还原型谷胱甘肽(GSH)和脯氨酸(Pro)含量分别比接种对照组(喷清水接种处理,CK1)提高了39.41%、21.11%、41.61%、13.04%、44.45%、48.32%和33.80%;丙二醛(MDA)、过氧化氢(H2O2)含量及超氧阴离子(O2-)产生速率分别比CK1组降低了20.45%、6.93%和6.27%.表明较低浓度的SNP可缓解轮纹病菌对梨叶片的伤害作用.This paper studied the effects of 0.3 mmol· L^-1 SNP on the antioxidant enzymes and reactive oxygen in pear leaves infected by Physalosproa piricola Nose. The results showed that compared with CK1 （ spraying leaves with water and infecting with P. piricola Nose） , 0. 3 mmol · L^-1 SNP could increase the activities of leaf POD, SOD, CAT and PPO and the contents of leaf ASA, GSH and proline by 39.41%, 21.11%, 41.61%, 13.04%, 44. 45%, 48.32% and 33.80%, while decrease the contents of leaf MDA and HzOz and the generating rate of O2^ - by 20. 45% , 6. 93% and 6. 27%, respectively, indicating that lower concentration SNP could reduce the damage of P. piricola Nose to pear leaves.

关 键 词：NO 梨叶片 轮纹病菌 膜脂过氧化 

分 类 号：S436.612[农业科学—农业昆虫与害虫防治]