버섯 세균성갈색무늬병원균(Pseudomonas tolaasii)의 분비 독소(tolaasin)를 저해하는 미생물 Pseudomonas sp. HC1

• Published in: Hangug gynnhaghoi ji Vol. 41; no. 4; pp. 248 - 254
• Main Authors: 이찬중, Chan Jung Lee, 유영미, Young Mi Yoo, 한주연, Ju Yeon Han, 전창성, Chang Sung Jhune, 정종천, Jong Chun Cheong, 문지원, Ji Won Moon, 서장선, Jang Sun Suh, 한혜수, Hye Su Han1, 차재순, Jae Soon Cha
• Format: Journal Article
• Language: Korean
• Published: 한국균학회 30.12.2013
• Subjects: Control efficacy; Detoxify; Mushrooms; Pseudomonas tolaasii; Tolaasin; Tolaasin; Control efficacy; Detoxify; Pseudomonas tolaasii; Mushrooms
• ISSN: 0253-651X; 2383-5249

A Gram-negative bacterium was isolated from mushroom media that markedly reduces the level of extracellular toxins (i.e., tolaasins) produced by Pseudomonas tolaasii, the most destructive pathogen of cultivated mushrooms. The HC1 strain was selected as detoxifying tolaasin by bioassay on potato and it was identified Pseudomonas sp. by the cultural, morphological and physiological characteristics, and analysis of the 16S rRNA.. The isolated bacterium is saprophytic but not parasitic nor pathogenic to cultivation mushroom. The isolated bacterium for P. tolaasii cell, was sufficient for detoxification in vitro. Inoculation of the isolated bacterium prevents the development of bacterial disease in Pleurotus ostreatus, Flammunia velutipes and Agaricus bisporus. Control efficacy of brown blotch of strain HC1 treatment was 69, 68 and 55% on Agaricus bisporus, Flammulina velutipes and Pleurotus ostreatus, respectively. The suppressive bacterium may be useful in future for the development of biocontrol system and the construction of genetically modified edible fungi resistant to the disease caused by P. tolaasii.