Highly host-linked viromes in the built environment possess habitat-dependent diversity and functions for potential virus-host coevolution

Shicong Du, Xinzhao Tong, Alvin C. K. Lai, Chak K. Chan, Christopher E. Mason and Patrick K. H. Lee ()
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Shicong Du: City University of Hong Kong
Xinzhao Tong: City University of Hong Kong
Alvin C. K. Lai: City University of Hong Kong
Chak K. Chan: City University of Hong Kong
Christopher E. Mason: Weill Cornell Medicine
Patrick K. H. Lee: City University of Hong Kong

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract Viruses in built environments (BEs) raise public health concerns, yet they are generally less studied than bacteria. To better understand viral dynamics in BEs, this study assesses viromes from 11 habitats across four types of BEs with low to high occupancy. The diversity, composition, metabolic functions, and lifestyles of the viromes are found to be habitat dependent. Caudoviricetes species are ubiquitous on surface habitats in the BEs, and some of them are distinct from those present in other environments. Antimicrobial resistance genes are identified in viruses inhabiting surfaces frequently touched by occupants and in viruses inhabiting occupants’ skin. Diverse CRISPR/Cas immunity systems and anti-CRISPR proteins are found in bacterial hosts and viruses, respectively, consistent with the strongly coupled virus–host links. Evidence of viruses potentially aiding host adaptation in a specific-habitat manner is identified through a unique gene insertion. This work illustrates that virus–host interactions occur frequently in BEs and that viruses are integral members of BE microbiomes.

Date: 2023
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DOI: 10.1038/s41467-023-38400-0

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