β-氨基丁酸诱导马铃薯叶片晚疫病抗性适宜浓度筛选  

Selection of Appropriate DL-β-amino-butyric Acid Concentration on the Protection of Potato Leaves against Phytophthora infestans

作　　者：李亚军[1] 田振东[1] 柳俊[1] 谢从华[1] 

机构地区：[1]国家蔬菜改良中心华中分中心,湖北省马铃薯工程技术研究中心,华中农业大学,湖北武汉430070

出　　处：《中国马铃薯》2007年第5期275-278,共4页Chinese Potato Journal

基　　金：国家自然科学基金(30471100)

摘　　要：β-氨基丁酸(DL-β-aminobutyric acid,BABA)是一种非蛋白氨基酸,能有效诱导多种植物产生对多种病原菌的抗性。为了解BABA处理浓度和时间对马铃薯叶片晚疫病抗性的诱抗效果,本试验用四个浓度梯度(0.5mmol·L^(-1)、1mmol·L^(-1)、2mmol·L^(-1)和4mmol·L^(-1)的BABA喷雾处理马铃薯植株,处理1d、2d、3d和4d后分别取离体叶片接种晚疫病菌。结果表明:在0.5～4mmol·L^(-1)范围,随着BABA浓度增加和处理时间的延长,叶片抗性逐渐增强。2mmol·L^(-1)和4mmol·L^(-1)BABA处理3d后接种,离体叶片晚疫病抗性显著提高。As a non-protein amino acid, DL-β-amino-butyric acid （BABA）protects numerous plants against various pathogens. In this study, potato plants were sprayed with different BABA solutions（0.5 mmol·L^-1, 1 mmol·L^-1, 2 mmol·L^-1 and 4 mmol·L^-1）. The detached leaves from the plants treated with BABA for 1, 2, 3 and 4 days were collected and used for inoculation with Phytophthora infestans separately. The results showed that the resistant level of potato leaves was enhanced with the increase of BABA concentration from 0.5-4 mmol·L^-1 and the days after BABA treatment from 1-4 d. Pre-treatment of potato plants with BABA （2 mmol·L^-1 and 4 mmol·L^-1） three days before pathogen inoculation induced a significantly higher level of resistance to P. infestans compared with the control.

关 键 词：马铃薯 Β-氨基丁酸 诱导抗性 晚疫病 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]