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一、病原菌(一)分类Dye (1968、1969) 根据致病性和分子遗传学将Erwinia分为3群。第一群的许多细菌学特性与Entobacter、Klebsiella和Serratia属相似,其中大多数水解果胶能力强,能引致组织浸解和强烈腐烂的植物病害,称为“Carotovora群”或软腐菌群,或畔“水解果胶群”或Pectobacterium;第二群由erwinias组成,通常产生黄色不溶于水的色素,为非植物病原的附生细菌或植物病原菌,称为“hcrbicola群”盛“herbicola-lathyri群”或“黄色素的Erwinia群;第三群既无果胶分解酶也无黄色素,但引起植物坏死和萎蔫病害,分类为Erwinia amylovora,称为“amylovora群”,有时称“白色不分解果胶的
First, the pathogens (a) Category Dye (1968,1969) Erwinia according to pathogenicity and molecular genetics divided into 3 groups. Many of the bacteriological characteristics of the first population are similar to those of Entobacter, Klebsiella and Serratia, most of which are pectin-hydrolyzing and strongly-decomposable plant diseases known as “Carotovora” or soft rot, Or “Pectobacterium hydrolyzate” or Pectobacterium; the second group, consisting of erwinias, usually produces a yellow, water-insoluble pigment that is a non-phytopathogenic epiphytic bacterium or phytopathogenic bacterium called “hcrbicola group” herbicola-lathyri Or “yellow” Erwinia; the third, neither pectinolytic nor yellow, causes plant necrosis and wilting disease and is classified as Erwinia amylovora, known as the “amylovora group,” sometimes referred to as "white non-decomposed Pectin