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Bacteroides thetaiotaomicron-infecting bacteriophage isolates inform sequence-based host range predictions

Authors :
Justin L. Sonnenburg
Bryan D. Merrill
Will Van Treuren
Daniel A. Russell
Rebecca A. Garlena
Eric J. Nelson
Eric C. Martens
Andrew J. Hryckowian
Nathan T. Porter
Publication Year :
2020
Publisher :
Cold Spring Harbor Laboratory, 2020.

Abstract

SummaryOur emerging view of the gut microbiome largely focuses on bacteria and less is known about other microbial components such as of bacteriophages (phages). Though phages are abundant in the gut, very few phages have been isolated from this ecosystem. Here, we report the genomes of 27 phages from the United States and Bangladesh that infect the prevalent human gut bacterium Bacteroides thetaiotaomicron. These phages are mostly distinct from previously sequenced phages with the exception of two, which are crAss-like phages. We compare these isolates to existing human gut metagenomes, revealing similarities to previously inferred phages and additional unexplored phage diversity. Finally, we use host tropisms of these phages to identify alleles of phage structural genes associated with infectivity. This work provides a detailed view of the gut’s “viral dark matter” and a framework for future efforts to further integrate isolation- and sequencing-focused efforts to understand gut-resident phages.

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....71584987e0f8c8ada808c491510b751c