热带作物学报2018，Vol.39Issue(2)：349-354,6.DOI:10.3969/j.issn.1000-2561.2018.02.021
朱砂叶螨为害前后抗、感木薯品种叶组织中无色花青素还原酶活性差异分析
Analysis of the Change of Activity of Leucoanthocyanidin Reductase in Different Leaf Tissues of Mite-resistant and Mite-susceptible Cassava Cultivars Damaged by Tetranychus cinnabarinus
摘要
Abstract
In order to study the function of leucoanthocyanidin reductase(LAR),a key tannin synthesis enzyme in cassava,the change of activity of LAR in different leaf tissues of mite-resistant and mite-susceptible cassava cultivars when damaged by T.cinnabarinus was analyzed in this study.The results showed that when the mite-susceptible cassava cultivars BRA900 were damaged for 1 d and 8 d,the activities of LAR in damaged rolled leaves,unfolded young leaves,the third leaves below the bud and the middle and base leaves were 1.38-,1.44-,1.33-,1.48-,1.42-,1.43-,0.82-and 0.50-fold compared to those before damaged,respectively,besides,the activities of LAR in cassava leaves either before and after damaged by T.cinnabarinus did not show significant difference except for those in 8 d-damaged leaves.Moreover,the activities of LAR in 1 d-and 8 d-damaged leaves of mite-resistant cassava cultivars C1115 significantly increased to 2.13-,2.41-,2.02-,2.09-,2.02-,2.04-,2.01-and 2.03-fold,respectively.The results provide preliminary evidence for the correlation between the increased activities of LAR and cassava resistance to mite,and partially explained why T.cinnabarinus mainly infested the cassava leaves from middle and base of the plant.关键词
木薯品种/朱砂叶螨/LAR酶活性/抗螨功能Key words
cassava cultivars/Tetranychus cinnabarinus/LAR activity/cassava resistance to mite分类
农业科技引用本文复制引用
赵惠萍,梁晓,伍春玲,陈青..朱砂叶螨为害前后抗、感木薯品种叶组织中无色花青素还原酶活性差异分析[J].热带作物学报,2018,39(2):349-354,6.基金项目
国家木薯产业技术体系虫害防控岗位科学专项(No.CARS-11-HNCQ) （No.CARS-11-HNCQ）
海南省科协青年科技人才学术创新计划项目(No.201508) （No.201508）
中央级公益性科研院所基本科研业务费专项(No.2017hzs1J013). （No.2017hzs1J013）
