摘要
以核桃黑斑病菌、野油菜黄单胞菌、水稻白叶枯病菌为研究对象,利用致病因子相关检测培养基,通过生物化学方法对其群体运动性、胞外酶分泌能力、胞外多糖分泌能力及生物被膜形成能力进行分析;同时开展菌株对逆境抵抗力的研究。结果表明,三种病原菌的致病因子表现出明显的差异,且对逆境具有不同耐受力。不同病原细菌间分泌毒力因子的能力不同,这可能是病原微生物对其宿主植物致病性有强弱之分的主要因素之一。
Taking Xanthomonas arboricola pv. juglandis , X. campestris pv. campestris , and X. oryzae pv. oryzae as objects, the ability to motility, secrete for extracellular enzyme and extracellular polysaccharides, the ability to form biofilms were analyzed by using the pathogenic factor-related detection medium and biochemical methods. At the same time, the resistance to stress environment of three strains was studied.The results showed that the pathogenic factors of the three pathogens revealed significant differences and had different tolerance to stress. Different pathogenic bacteria have different abilities to secrete virulence factors, which might be one of the main factors that pathogenic microorganisms had different pathogenicity on their host plants.
作者
李峰
刘婕
毛雅慧
Li Feng;Liu Jie;Mao Yahui(Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables,Hubei Engineering University,Xiaogan,Hubei 432000,China;School of Life Science and Technology,Hubei Engineering University,Xiaogan,Hubei 432000,China)
出处
《湖北工程学院学报》
2019年第3期32-37,共6页
Journal of Hubei Engineering University
基金
湖北省教育厅科研项目(Q20172703)
国家自然科学基金资助项目(31700567)
关键词
植物病原菌
毒力因子
致病机理
plant pathogenic bacteria
virulence factors
pathogenic mechanism