NO and H_2O_2 induced by Verticillium dahliae toxins and its influence on the expression of GST gene in cotton suspension cells  

作　　者：JIA ZhiQi YUAN HaiYong Li YingZhang 

机构地区：[1]State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing100094, China

出　　处：《Chinese Science Bulletin》2007年第10期1347-1354,共8页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 3017555 and 30170087)

摘　　要：Nitric oxide (NO) and hydrogen peroxide (H2O2) have been shown to be important signaling molecules that participate in the regulation of several physiological processes. In particular, they have significant role in plant resistance to pathogens by contributing to induction defense genes. Here, whether NO and H2O2 participate in the resistance responses against Verticillium dahliae toxins (VD-toxins) and their effects on the expression of GST gene are studied. The results reveal that NO and H2O2 are produced as part of a complex network of signals that respond to VD-toxins and may converge to function both synergistically and independently by inducing resistant responses. GST gene is potentially involved in the resistance mechanism in the cotton suspension cells. NO induces the expression of GST gene independently of H2O2. H2O2 may be a more potent signal in the resistance responses against VD-toxins.Nitric oxide （NO） and hydrogen peroxide （H2O2） have been shown to be important signaling molecules that participate in the regulation of several physiological processes. In particular, they have significant role in plant resistance to pathogens by contributing to induction defense genes. Here, whether NO and H2O2 participate in the resistance responses against Verticillium dahliae toxins （VD-toxins） and their effects on the expression of GSTgene are studied. The results reveal that NO and H2O2 are produced as part of a complex network of signals that respond to VD-toxins and may converge to function both synergistically and independently by inducing resistant responses. GSTgene is potentially involved in the resistance mechanism in the cotton suspension cells. NO induces the expression of GSTgene independently of H2O2. H2O2 may be a more potent signal in the resistance responses against VD-toxins.

关 键 词：棉花大丽轮枝菌毒素 诱导 NO H2O2 棉花悬浮培养细胞 GST基因 过表达 

分 类 号：S435.621.24[农业科学—农业昆虫与害虫防治]