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Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo
The rise of next generation sequencing is revealing a hidden diversity of temperate phages within the microbial community. While a handful of these phages have been well characterized, for the vast majority, the role of phage carriage, and especially multiple phage carriage, is poorly understood. Th...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BlackWell Publishing Ltd
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408145/ https://www.ncbi.nlm.nih.gov/pubmed/25926879 http://dx.doi.org/10.1111/eva.12243 |
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author | Burns, Nicola James, Chloe E Harrison, Ellie |
author_facet | Burns, Nicola James, Chloe E Harrison, Ellie |
author_sort | Burns, Nicola |
collection | PubMed |
description | The rise of next generation sequencing is revealing a hidden diversity of temperate phages within the microbial community. While a handful of these phages have been well characterized, for the vast majority, the role of phage carriage, and especially multiple phage carriage, is poorly understood. The Liverpool epidemic strain of Pseudomonas aeruginosa is an aggressive pathogen in cystic fibrosis lung infections that has recently been found to contain several unique prophages within its genome. Here, we experimentally investigate the role of two of these phages in vivo, using an insect model of infection. We find that while no benefit is conferred by phage carriage in single bacterial infections, phages confer a large fitness advantage during mixed infections by mediating bacteria–bacteria competition. Differences between the two phages appeared to be associated with the rate at which the competitor acquired the phage, and therefore resistance. However, the advantage was greatest in the polylysogen, carrying both phages. These findings suggest that the LES phages may play an important role in host invasions and more generally show that the carriage of multiple phages may itself be beneficial by hindering the spread of resistance in rival bacterial populations. |
format | Online Article Text |
id | pubmed-4408145 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BlackWell Publishing Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-44081452015-04-29 Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo Burns, Nicola James, Chloe E Harrison, Ellie Evol Appl Original Articles The rise of next generation sequencing is revealing a hidden diversity of temperate phages within the microbial community. While a handful of these phages have been well characterized, for the vast majority, the role of phage carriage, and especially multiple phage carriage, is poorly understood. The Liverpool epidemic strain of Pseudomonas aeruginosa is an aggressive pathogen in cystic fibrosis lung infections that has recently been found to contain several unique prophages within its genome. Here, we experimentally investigate the role of two of these phages in vivo, using an insect model of infection. We find that while no benefit is conferred by phage carriage in single bacterial infections, phages confer a large fitness advantage during mixed infections by mediating bacteria–bacteria competition. Differences between the two phages appeared to be associated with the rate at which the competitor acquired the phage, and therefore resistance. However, the advantage was greatest in the polylysogen, carrying both phages. These findings suggest that the LES phages may play an important role in host invasions and more generally show that the carriage of multiple phages may itself be beneficial by hindering the spread of resistance in rival bacterial populations. BlackWell Publishing Ltd 2015-04 2015-02-27 /pmc/articles/PMC4408145/ /pubmed/25926879 http://dx.doi.org/10.1111/eva.12243 Text en © 2014 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd. http://creativecommons.org/licenses/by/4.0/ This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Original Articles Burns, Nicola James, Chloe E Harrison, Ellie Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title | Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title_full | Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title_fullStr | Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title_full_unstemmed | Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title_short | Polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
title_sort | polylysogeny magnifies competitiveness of a bacterial pathogen in vivo |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4408145/ https://www.ncbi.nlm.nih.gov/pubmed/25926879 http://dx.doi.org/10.1111/eva.12243 |
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