Department of Applied Biology, University of Helsinki, Helsinki, Finland.
J Appl Microbiol. 2009 Jan;106(1):199-212. doi: 10.1111/j.1365-2672.2008.03992.x. Epub 2008 Nov 29.
To test interactions between pathogenic strains of Streptomyces turgidiscabies, S. scabies and S. aureofaciens. To study biological control of S. turgidiscabies and S. scabies using the nonpathogenic Streptomyces strain (346) isolated from a scab lesion and a commercially available biocontrol agent (S. griseoviridis strain K61; 'Mycostop').
Pathogenic strains of S. turgidiscabies and S. aureofaciens inhibited growth of S. scabies in vitro, whereas strain 346 and S. griseoviridis inhibited the pathogenic strains and were subsequently tested for control of scab in the greenhouse and field. Strains 346 and K61 suppressed development of common scab disease caused by S. turgidiscabies in the greenhouse. Strain 346 reduced incidence of S. turgidiscabies in scab lesions on potato tubers in the field.
Streptomyces turgidiscabies shows antagonism against S. scabies that occurs in the same scab lesions and shares the ecological niche in the field. Biocontrol of S. turgidiscabies is possible with nonpathogenic Streptomyces strains but interactions may be complicated.
Streptomyces turgidiscabies may have potential to displace S. scabies under the Scandinavian potato growing conditions. Biological control of the severe potato scab pathogen, S. turgidiscabies, is demonstrated for the first time. The results can be applied to enhance control of common scab.
测试致病菌株藤黄微球菌、疮痂链霉菌和金黄色葡萄球菌之间的相互作用。使用从疮痂病斑中分离出的非致病链霉菌菌株（346）和市售生物防治剂（灰色链霉菌 K61；“Mycostop”）来研究对藤黄微球菌和疮痂链霉菌的生物防治。
藤黄微球菌和金黄色葡萄球菌的致病菌株在体外抑制疮痂链霉菌的生长，而菌株 346 和灰色链霉菌抑制致病菌株，随后在温室和田间测试对疮痂病的控制效果。菌株 346 和 K61 在温室中抑制了由藤黄微球菌引起的普通疮痂病的发展。菌株 346 在田间疮痂病斑上减少了藤黄微球菌的发病率。
藤黄微球菌对在同一疮痂病斑中发生的疮痂链霉菌表现出拮抗作用，并且在田间具有相同的生态位。使用非致病链霉菌菌株可以实现对藤黄微球菌的生物防治，但相互作用可能很复杂。
在斯堪的纳维亚马铃薯种植条件下，藤黄微球菌可能有潜力取代疮痂链霉菌。首次证明了对严重的马铃薯疮痂病病原体藤黄微球菌的生物防治。研究结果可用于增强对普通疮痂病的控制。
