在安徽滁州的豆薯叶片上发现一种由细菌侵染引起角斑症状的病害,从角斑上分离到具有致病性的非荧光的杆状细菌,菌株的表型特征、细菌学特征、LOPAT 试验和生理生化试验表明该细菌与丁香假单胞菌(Pseudom onas syringae van Hall)相似,BIOLOG 系统鉴定结果与丁香假单胞菌豌豆致病变种(P.syringae pv. pisi)相近,接种试验表明豆薯菌株能侵染大豆、菜豆和眉豆,但对豌豆的致病性差;在豇豆、绿豆和蚕豆上不表现症状。结果表明豆薯细菌性角斑病是一种新病害,病原菌属于丁香假单胞菌群的一个新的致病变种,命名为 P.syringae pv. pachyrhizus nov In Chuzhou, Anhui Province, a pest-like disease caused by bacterial infection was found in the leaves of Chu-Wu of Anhui Province. Pathogenic non-fluorescent rod-shaped bacteria were isolated from the cornea. The phenotypic characteristics, bacteriological characteristics, The LOPAT test and physiological and biochemical tests showed that the bacterium was similar to Pseudom onas syringae van Hall and the BIOLOG system was similar to P. syringae pv. Pisi. The inoculation test The results showed that the soybean strains could infect soybeans, kidney beans and eyebrow beans, but had poor pathogenicity to peas, and showed no symptoms on cowpea, mung bean and broad bean. The results showed that the bacterial wilt disease was a new disease, and the pathogen belonged to a new pathogenic strain of P. syringae and was named P. syringae pv. Pachyrhizus nov