Microbiol. Biotechnol. Lett. 2000; 28(6): 334-340
생물방제균 Pseduomonas fluorescens 2112의 선발과 고추역병균에 대한 항진균성 길항작용
Selection and Antifungal Activity of Antagonistic Bacterium Pseudomonas sp. 2112 against Red-Pepper Rotting Phytophthora capsici
In order to select multifunctional powerful antagonistic biocontrol agent against red-pepper rotting fungi Phytophthora capsici, we isolated an indigenous antagonistic bacterium which produces antifungal substances and siderophores from a local soil of Kyongju, Korea. The isolated strain was identified as Pseudomonas fluorescens biotype F. The antibiotic produced from P. fluorescens 2112 inhibited hyphae growth and the zoospore germination of Phytophthora capsici. The favorable carbon, nitrogen source and salts for the production of antibiotic from P. fluorescens 2112 were glycerol, beef extract and LiCi at 1.0%, 0.5% and 5 mM, respectively. And antagonistic activity of P. fluorescens 2112 was confirmed against P. capsici in vivo.
Keywords: Antagonistic bacterium, Pseduomonas fluorescens 2112, antifungal, siderophore, biocontrol
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