Journal of Microbiology

Research Support, Non-U.S. Gov't

NOTE] The Microbial Population in the Air of Cultivation Facility of Oyster Mushrooms: Se Chul Chun , Yu Na Ahn , Sajid Mohamad Khan , Il Min Chung , Hyang Yoen Won , Chang Sung Jhune , Yool Jin Park; J. Microbiol. 2012;50(6):1053-1057. Published online December 30, 2012; DOI: https://doi.org/10.1007/s12275-012-2195-1

Abstract: The microbial population in the air of mushroom cultivation facility was studied to understand the population structure and size depending on the cultivation methods and regions. The air contents of ten farmers’ oyster mushroom cultivation facilities in Kyunggi province were sampled. The results indicated that there was no difference in population size depending on the regions of mushroom cultivation. In addition, the population size of bacteria in the growth room was bigger than that of the cooling room and outside of the mushroom house, but the fungal population was similar in size between cultivation stages. With regard to population structure, Pseudomonas and Penicillium species were most frequently isolated from the air of oyster mushroom cultivation facility.

Infectious RNA viruses in the edible mushroom pleurotus spp: Park, Jeong Soo , Kim, Young Ho; J. Microbiol. 1996;34(1):61-67.

Abstract: Double-stranded RNA (dsRNA) viruses and single-stranded RNA(ssRNA) viruses were detected in a strain of Pleurotus mushroom cultivated in a farm. Those fungal viruses were purified in the pH 6.0 or pH 7.2 using CsCI or Cs₂SO₄buoyant density centrifugation. Each viral particles were not completely separated at any trials. However, mushroom bacili-form virus contains a single major nucleic acid with 0.7 Kb ssRNA, which might code for 20 Kd viral capsid protein. The dsRNAs are encapsidatred into spherical-form viruses, whereas ssRNA viral genomes are encapsidated into two different sizes of bacili-form particles. A healthy-looking mushroom also contained some spherical-form viruses with dsRNAs. Laboratory strains of Pleurotus ostreatus and a cultivated strain of P. sajor-caju did not show any viral particles. Mushrooms with specific disease symptoms. however, contained at least four different sizes of spherical-form viruses. Thus, we concluded that a bacilli-form virus case a severe disease symptoms of abnormal on mushroom development.

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