中国水稻科学Issue(4)：419-426,8.DOI:10.3969/j.issn.1001-7216.2014.04.011
茉莉酸甲酯浸种对水稻幼苗白叶枯病抗性及抗氧化酶活性的影响
Effects of Seed Soaking with Methyl Jasmonate on Resistance to Bacterial Leaf Blight and Antioxidant Enzyme Activities of Rice Seedlings
摘要
Abstract
This experiment was carried out to study the effects of seed soaking with exogenous methyl jasmonate (MeJA)on resistance to bacterial leaf blight and antioxidant enzyme activities of rice seedlings with Wen 229 (susceptible to rice bacterial leaf blight )and Jiazao 3 12 (resistant)as experimental materials.The results showed that MeJA soaking significantly decreased the disease indexes of bacterial leaf blight in rice seedlings,especially for the resistant cultivar.With rising MeJA solution concentration,the activities of superoxide dismutase,peroridase,catalase and ascorbate peroxidase in leaves of rice seedlings increased firstly and then decreased,while the malondialdehyde (MDA)content raised at first and dropped afterwards.At a concentration of 0.5 mmol/L,MeJA soaking caused damage to rice seedings.The responses of antioxidant enzyme activities and lipid peroxidation content to MeJA soaking varied with variety.The above results indicated that MeJA soaking could effectively relieve the bacterial leaf blight of rice seedlings.The increase of the antioxidant enzyme activities and the decrease of the MDA content are related to its resistant reactions to bacterial leaf blight.关键词
茉莉酸甲酯/水稻幼苗/白叶枯病/抗氧化酶/膜脂过氧化Key words
Methyl jasmonate/rice seedlings/bacterial leaf blight/antioxidant enzyme/lipid peroxidation分类
农业科技引用本文复制引用
向妙莲,付永琦,何永明,黄友明,曾晓春..茉莉酸甲酯浸种对水稻幼苗白叶枯病抗性及抗氧化酶活性的影响[J].中国水稻科学,2014,(4):419-426,8.基金项目
江西省“赣鄱英才555工程”领军人才培养计划资助项目 （）
江西省科技支撑计划资助项目 （）
