Bacterial community characteristics in different particle sizes of bioaerosols in winter haze days in Qingdao
MA Man-man1,2,3, ZHEN Yu1,2,3, MI Tie-zhu1,2,3, QI Jian-hua1,2,3, SHAO Cong-cong1,2, FENG Wen-rong1,2,3
1. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China;
2. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, China;
3. Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
Airborne bacterial community characteristics in winter haze days in Qingdao were studied using Illumina high-throughput sequencing. 807104 sequences obtained could be divided into 874 OTUs on 97% similarity level, and 344 OTUs were assigned to the genus level. The results showed that the bacterial community structure and diversity in bioaerosols varied significantly when the haze occurred. From non-haze day to severe haze day, both community richness and diversity of airborne bacteria decreased, and the difference of airborne bacterial community richness among particle sizes decreased gradually, while the difference of airborne bacterial community diversity among particle sizes increased gradually. The dominant bacteria in non-haze day were Pseudomonas, Veillonella and Sphingomonas, while the dominant bacteria changed into Sphingomonas in haze days. During this haze event, Sphingomonas, whose concentration increased, as well as new-detected Dermacoccus, Fusobacterium, Sneathia and Flavobacterium were pathogens, may have health risks.
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MA Man-man, ZHEN Yu, MI Tie-zhu, QI Jian-hua, SHAO Cong-cong, FENG Wen-rong. Bacterial community characteristics in different particle sizes of bioaerosols in winter haze days in Qingdao. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(8): 2855-2865.
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