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Distribution and Characteristics of Microorganisms Associated with Settled Particles During Asian Dust Events
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황사 발생 기간 낙하먼지에 포함된 미생물의 분포 및 특성

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Type
Academic journal
Author
Ji Yun Koh (울산대학교) Chan Gook Jang (울산대학교) Min Ju Cha (울산대학교) Kyo Nam Park (울산대학교) Min Kyu Kim (울산대학교) Jongseol Kim (울산대학교)
Journal
The Microbiological Society of Korea Korean Journal of Microbiology Vol.48 No.2 KCI Accredited Journals SCOPUS
Published
2012.6
Pages
134 - 140 (7page)

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Distribution and Characteristics of Microorganisms Associated with Settled Particles During Asian Dust Events
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Asian dust storms originating in the arid desert of China and Mongolia usually occur from late winter through spring, and more than one million tons of dust per year is transported to the Korean Peninsula by the prevalent westerly winds. We supposed that these dust particles could include bioaerosols and act as carriers of microorganisms. In order to clarify the dynamics of microorganisms moving with these particles, the concentration and composition of microorganisms associated with settled particles were compared between samples collected during Asian dust events and those under non-dust periods. From February to April 2008, settled dust particles were collected at one location in Ulsan using rainfall meter of 200 ㎜ diameter. During this period, there was one Asian dust event in Ulsan. The bacterial concentrations were higher in samples collected during Asian dust event than those under non-dust period, whereas fungal concentrations were rather similar regardless of the Asian dust event. We analyzed 16S rRNA gene sequences of 45 bacterial isolates obtained from the settled particle samples. These isolates belonged to either genus Bacillus or genus Streptococcus and were tentatively identified as B. amyloliquefaciens, B. aryabhattai, B. atrophaeus, B. licheniformis, B. megaterium, B. methylotrophicus, B. pumilus, B. sonorensis, B. subtlis, B. vallismortis, S. epidermidis, and S. succinus. In cases of fungal isolates, genera such as Mucor, Alternaria, Cladosporium, and Aspergillus were tentatively identified from samples collected at both Asian dust and non-Asian dust periods. It appears that endospore-forming bacteria such as Bacillus sp. rather than fungal spores are more likely to be associated with Asian dust particles.
#Asian dust #bacteria #fungi #settled particle

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References (23)

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1. [단행본] - American public health association / / Standard methods for the examination of water and wastewater, 19th ed / American Public Health Association google schola 2. [단행본] - Atlas, R.M. / 1996 / Handbook of microbiological media / CRC press google schola 3. [학술지(정기간행물)] - 배강우 / 2005 / 2003년 태안지역에서 황사 부유분진의 미생물학 적 동정과 금속 성분 및 농도 / Tuberculosis and Respiratory Diseases 58 (2) : 167 ~ 173 dbpia 4. [학술지(정기간행물)] - Choi, D.-S. / 1997 / Distribution of airborne microorganisms in yellow sands of Korea / J. Microbiol 35 : 1 ~ 9 google schola 5. [학술지(정기간행물)] - Chun, Y. / 2001 / Synopsis, transport, and physical characteristics of Asian dust in Korea / J. Geophy. Res 106 : 18461 ~ 18469 google schola

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