文献类型：期刊文章

作　　者：郭泽建[1] 李德葆[1]

机构地区：[1]浙江大学生物技术研究所,杭州310029

出　　处：《Acta Botanica Sinica》

基　　金：国家自然科学基金!( 3 9980 0 3 3 );曹光彪高新科技基金!( 1990 4)&&

年　　份：2000

卷　　号：42

期　　号：9

起止页码：881-891

语　　种：中文

收录情况：CSCD、CSCD2011_2012、SCI-EXPANDED(收录号：WOS:000089688900001)、WOS、普通刊

摘　　要：Oxidative burst is one of the earliest responses in plant resistance to pathogen attack. Studies indicate that the oxidative burst is composed of two phases. The first burst is weak and biologically nonspecific, whereas the phase Ⅱ burst is massive and produced only as an incompatible interaction. The rapid transient production of active oxygen species plays an important role in plant defense strategy against diseases. It involves: 1) antimicrobial activity, 2) substrate for oxidative cross_linking of cell wall, 3) triggering factor of hypersensitive response, 4) mobile signal inducing local and systemic acquired resistance by itself or its derivatives, 5) induction of phytoalexin accumulation, and 6) regulation of gene transcription. Emerging data indicate that the oxidative burst initiates from the activation of NADPH oxidase system resembling that of animal phagocytes. The generation of active oxygen species by a pH_dependent peroxidase is also present in some plants. Further, there is a complete system in plants to regulate the accumulation and scavenging of active oxygen species to protect plants from secondary infection, and at the same time to avoid the oxidative stress.

关 键 词：活性氧 信号传导 防卫反应 植物抗病性 产生机制  

分 类 号：S432.23]