芸薹链格孢毒素致病机理及钝化初步研究  

The preliminary research on pathogenesis and inactivation of AB-toxin

作　　者：马振国 董金皋[1] 樊慕贞[1] 

机构地区：[1]河北农业大学植病系,河北保定071001

出　　处：《河北农业大学学报》2000年第1期63-66,共4页Journal of Hebei Agricultural University

基　　金：河北省自然科学基金资助项目 !(3941 34 )

摘　　要：AB -毒素是由芸薹链格孢产生的一种寄主选择性毒素 ,它能导致白菜叶片黄化、坏死和萎蔫 ,破坏白菜叶片细胞的光合作用 ,降低叶绿素含量 ,增大叶片细胞膜透性 ,使细胞内电解质外渗。KMnO4 、KI和K2 Gr2 O7能够钝化AB -毒素的生物活性 ,但是 ,KMnO4AB-toxin produced by Alternaria brassicae could induce Chinese cabbage chlorosis, necrosis and wilt, which is a kind of host-selective toxin. It was found that AB-toxin could not only reduce the content of chlorophyll and decrease the rate of photosynthesis of leaves but also increase electrolyte leakage outside the cells. KMnO 4, KI and K 2Gr 2O 7 could make AB-toxin inactive, but KMnO 4 only lightly inhibited the mycelium growth of Alternaria brassicae .

关 键 词：AB-毒素 芸薹链格孢 致病机理 钝化 大白菜病害 

分 类 号：S436.341.1[农业科学—农业昆虫与害虫防治]