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


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Shan, Y, Guo, J, Fan, W, Li, H, Wu, H, Song, Y ORCID: 0000-0002-8178-5641, Jalleh, G, Wu, W and Zhang, G 2020 , 'Modern urbanization has reshaped the bacterial microbiome profiles of house dust in domestic environments' , The World Allergy Organization Journal, vol. 13, no. 8 , pp. 1-16 , doi: 10.1016/j.waojou.2020.100452.

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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 0.5) between urbanization level and bacterial genera Streptococcus, Bartonella, Staphylococcus, Pseudomonas, Acinetobacter, Bacteroides, Corynebacterium_1 , and Enhydrobacter and a negative correlation (r coefficient 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 Type: Article
Authors/Creators: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
Keywords: house dust bacteria, level of urbanization, pet, occupants
Journal or Publication Title: The World Allergy Organization Journal
Publisher: Lippincott Williams & Wilkins
ISSN: 1939-4551
DOI / ID Number: 10.1016/j.waojou.2020.100452
Copyright Information:

© 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 (

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