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Updated: Aug 19, 2026

Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions
Published on: January 7, 2019
Distribution of Microbiota in Fine Particulate Matter Particles in Guangzhou, China
Shi Rui Dong1, Ya Jing Han2, Jing Wu2
1Department of Pathogen Biology, School of Medicine, Jinan University, Guangzhou 510632, Guangdong, China;Guangdong Key Laboratory of Environmental Pollution and Health, Jinan University, Guangzhou 510632, Guangdong, China.
Objective:
High PM 2.5 concentration is the main feature of increasing haze in developing states, but information on its microbial composition remains very limited. This study aimed to determine the composition of microbiota in PM 2.5 in Guangzhou, a city located in the tropics in China.
Methods:
In Guangzhou, from March 5 th to 10 th, 2016, PM 2.5 was collected in middle volume air samplers for 23 h daily. The 16S rDNA V4 region of the PM 2.5 sample extracted DNA was investigated using high-throughput sequence.
Results:
Among the Guangzhou samples, Proteobacteria, Bacteroidetes, Firmicutes, Cyanobacteria, and Actinobacteria were the dominant microbiota accounting for more than 90% of the total microbiota, and Stenotrophomonas was the dominant gram-negative bacteria, accounting for 21.30%-23.57%. We examined the difference in bacterial distribution of PM 2.5 between Beijing and Guangzhou at the genus level; Stenotrophomonas was found in both studies, but Escherichia was only detected in Guangzhou.
Conclusion:
In conclusion, the diversity and specificity of microbial components in Guangzhou PM 2.5 were studied, which may provide a basis for future pathogenicity research in the tropics.
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