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Modern urbanization has reshaped the bacterial microbiome profiles of house dust in domestic environments


Shan, Y and Guo, J and Fan, W and Li, H and Wu, H and Song, Y and Jalleh, G and Wu, W and Zhang, G, Modern urbanization has reshaped the bacterial microbiome profiles of house dust in domestic environments, The World Allergy Organization Journal, 13, (8) pp. 1-16. ISSN 1939-4551 (2020) [Refereed Article]

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Copyright Statement

2020 The Authors. Published by Elsevier Inc. on behalf of World Allergy Organization. This is an open access article under the CC BYNC-ND license (

DOI: doi:10.1016/j.waojou.2020.100452


Background: The prevalence of allergy and other common chronic diseases is higher in developed than developing countries, and higher in urban than rural regions. Urbanization through its modification of environmental microbiomes may play a predominant role in the development of these conditions. However, no studies have been conducted to compare the microbiome in house dust among areas with different urbanization levels.

Methods: House dust from Xinxiang rural area (XR, n = 74), Xinxiang urban area (XU, n = 33), and Zhengzhou urban area (ZU, n = 32) in central China, and from Australia (AU, n = 58 [with pets AUP, n = 15, without pets AUNP, n = 43]) were collected during a summer season in China and Australia. High-throughput sequencing of 16S rDNA was employed to profile house dust bacterial communities.

Results: Settled dust collected in China was dominant with 2 bacterial phyla: Proteobacteria and Actinobacteria, while floor dust collected in Australia had a higher proportion of phylum Proteobacteria, Firmicutes, and Actinobacteria. XR dust samples presented higher bacterial richness and diversity compared with XU or ZU samples. Urbanization level (r2 = 0.741 P < 0.001) had a significant correlation with the distribution of house dust bacterial community. At the genus level, there was a positive correlation (r coefficient > 0.5) between urbanization level and bacterial genera Streptococcus, Bartonella, Staphylococcus, Pseudomonas, Acinetobacter, Bacteroides, Corynebacterium_1 , and Enhydrobacter and a negative correlation (r coefficient < -0.5) with Rhodanobacter.

Conclusion: There was a significant difference in house dust microbiota among different urbanization areas. The areas with a lower urbanization level presented higher dust-borne bacterial richness and diversity. Modern urbanization has a significant influence on the bacterial microbiome profiles of indoor dust.

Item Details

Item Type:Refereed Article
Keywords:house dust bacteria, level of urbanization, pet, occupants
Research Division:Biological Sciences
Research Group:Microbiology
Research Field:Bacteriology
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the biological sciences
UTAS Author:Song, Y (Dr Yong Song)
ID Code:143416
Year Published:2020
Web of Science® Times Cited:9
Deposited By:Menzies Institute for Medical Research
Deposited On:2021-03-16
Last Modified:2021-05-27
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