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Piggyback-the-Winner in host-associated microbial communities

Open access
Silveira, Cynthia B, Rohwer, Forest L·2016·npj Biofilms and Microbiomes

Abstract

Phages can exploit their bacterial hosts by lytic infection, when many viral particles are released at cell lysis, or by lysogeny, when phages integrate into the host’s genome. We recently proposed a new dynamic model of bacteria–phage interactions in which lysogeny predominates at high microbial abundance and growth rates. This model, named Piggyback-the-Winner (PtW), contrasts to current accepted models on the frequency of lysis and lysogeny and predicts that phages integrate into their hosts’ genomes as prophages when microbial abundances and growth rates are high. According to PtW, switching to the temperate life cycle reduces phage predation control on bacterial abundance and confers superinfection exclusion, preventing that a closely-related phage infects the same bacterial cell. Here we examine how PtW is important for metazoans. Specifically, we postulate that PtW and the recently described bacteriophage adherence to mucus (BAM) model are strongly interrelated and have an important role in the development of the microbiome. In BAM, phage produced by the microbiome attach to mucins and protect underlying epithelial cells from invading bacteria. Spatial structuring of the mucus creates a gradient of phage replication strategies consistent with PtW. We predict that lysogeny is favored at the top mucosal layer and lytic predation predominates in the bacteria-sparse intermediary layers. The lysogeny confers competitive advantage to commensals against niche invasion and the lytic infection eliminates potential pathogens from deeper mucus layers.

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Metadata

Authors
Silveira, C. B., & Rohwer, F. L.
Venue
npj Biofilms and Microbiomes
Published
2016-07-06
Volume
2
Issue
1
Pages
16010-16010
ISSN
2055-5008 (ISSN-L)
OpenAlex
W2468409351
Cited by
341
References
8
FWCI
11.07
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Piggyback-the-Winner in host-associated microbial communities. https://app.cochat.ai/papers/10.1038/npjbiofilms.2016.10
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Silveira, C. B., & Rohwer, F. L. (2016). Piggyback-the-Winner in host-associated microbial communities. npj Biofilms and Microbiomes. https://doi.org/10.1038/npjbiofilms.2016.10

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