5第五章植物防卫反应基因√

第一节 防卫反应基因的特点
一、防卫反应基因的结构特点 多以基因家族出现 二 防卫反应基因的表达 多数是诱导性的 ，且应答迅速。 三、防卫反应基因功能的多重性 正常生活中也需要它们定量的表达 多种不同类型因子的诱导
Features defense response genes
First, the structural characteristics of the defense response genes, Multi-gene family appears to
4．PR-4蛋白及其基因(家族4)
这些蛋白在植物中的确切位置尚不清楚。与PR—1蛋白 一样，尚未发现与之有关的酶活性或其它功能。有 些研究认为PR-4蛋白与细胞中的Ca2+信号有关
l PR-1 protein and its gene (family 1) The histones are the first reported infection associated with TMv PR protein, but so far it is not clear about the function. 2. PR-2 protein and gene (family 2) This group of proteins have been identified in four kinds of serological PR proteins associated with -1,3- glucanase. 3. PR-3 protein and its gene (family 3) The Histone have chitinase activity, at least four kinds of serological related proteins. 4. PR-4 protein and its gene (family 4) These proteins in plants is not clear exactly where. And PR-1 protein as yet found relating to activity or other functions. Some studies suggest that PR-4 protein and cell Ca2 + signal related
烟草中 PR蛋白
l PR-1蛋白及其基因(家族1)
该组蛋白是最先报道与TMv侵染有关的PR蛋白，但迄 今其有关功能尚不清楚。
2．PR—2蛋白及其基因(家族2) 这一组蛋白中已鉴定出4种血清学相关的PR蛋白，具
有-1，3—葡聚糖酶活性。 3．PR-3蛋白及其基因(家族3)
该组蛋白具有几丁质酶活性，至少有4种血清学相关的 蛋白组成。
第五章 植物防卫反应基因
已克隆的防卫反应基因
目前研究得比较多，并且已经得到克隆的防卫反 应基因主要有：
涉及植保素和木质素合成的关键酶基因，
几丁质酶、-1，3-葡聚糖酶基因，
富含羟脯氨酸的糖蛋白(HRGP)、 富含甘氨酸的糖蛋白(GRP)基因， 病程相关蛋白基因 以及一些功能未知的与防卫反应有关的cDNA等。 另外，乙烯和酚类化合物合成酶基因．病原物与
Two defense response genes, Most are induced, and rapid response.
Third, the defense response gene function multiplicity
Normal life, they also need a quantitative expression. Many different types of inducing factor
致病有关酶抑制剂基因等也已得到克隆(图5—1)。
Defense response genes have been cloned
More than the current research, and has been cloned defense response geneΒιβλιοθήκη Baidu are: Phytoalexin and involve key enzyme in lignin biosynthesis, Chitinase,
第二节防卫反应基因的主要类型
一、病程相关蛋白基因 (一) PR基因家族遗传特征 (表)
自1970年发现PR蛋白以来，烟草中已报道了5大 类至少14种PR蛋白，部分PR蛋白性质已比较清楚， 但多数仍在进一步研究之中。
First, the pathogenesis-related protein gene (A) PR gene family genetic characteristics (Table) Since 1970 PR proteins found since, tobacco has been reported 5 categories at least 14 PR proteins, some PR protein nature has been relatively clear, but most are still under investigation.
-1,3- glucanase gene, Hydroxyproline-rich glycoprotein (HRGP), Glycine-rich glycoprotein (GRP) gene, Pathogenesis-related gene As well as some of unknown function and defense reactions associated cDNA and the like. In addition, ethylene and phenolic compounds synthase gene. Pathogens and disease-causing genes related enzyme inhibitors have also been cloned (Figure 5-1)