茉莉酸甲酯对烟草抗黄瓜花叶病毒的诱导效应  

Inductive effect of methyl jasmonate on tobacco resistance to cucumber mosaic virus

作　　者：师金鸽[1] 殷全玉[1] 杨铁钊[1] 李占杰[1] 贾燕超[1] 韩晓哲[1] 

机构地区：[1]河南农业大学农学院,河南郑州450002

出　　处：《甘肃农业大学学报》2009年第5期55-60,共6页Journal of Gansu Agricultural University

基　　金：河南省烟草专卖局资助项目(hykj200201)

摘　　要：用1 g.L-1茉莉酸甲酯(MJ)处理小十字期烟草幼苗,烟苗移栽后长至10片真叶时再用相同浓度MJ处理一次,并接种烟草黄瓜花叶病毒,研究茉莉酸甲酯对烟草黄瓜花叶病毒(CMV)的诱导效应.结果表明:接种CMV后21 d,MJ处理烟株的病情显著低于对照,诱导效果达到43.24%;MJ处理提高了烟草幼苗叶片内的过氧化物酶、过氧化氢酶及超氧化物歧化酶的活性和过氧化氢的含量;而接种CMV后,MJ处理烟株叶片过氧化氢酶、超氧化物歧化酶活性下降,过氧化物酶活性增强,过氧化氢含量明显升高.Tobacco seedlings in cross period were sprayed with 1 g·L^-1 methyl jasmonate（MJ）,ten-leaf tobacco plants,after being transplanted,were treated with the same treatment,and inoculated with cucumber mosaic virus（CMV）,then the effects of MJ on resistance induction were studied.The results revealed that：21 d after inoculated with CMV,the disease indexes of tobacco plants treated with MJ was lower than CK,the inductiive effect was 43.24 %;The activities of POD,CAT,SOD,and the content of H2O2 in tobacco leaves increased under MJ treatment;After the tobacco plants were inoculated with CMV,the activities of CAT and SOD decreased,the activity of POD and the content of H2O2 increased.

关 键 词：烟草 茉莉酸甲酯 黄瓜花叶病毒 过氧化物酶 超氧化物歧化酶 

分 类 号：S572[农业科学—烟草工业]