Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.

Filamentous phages have distinguished roles in conferring many pathogenicity and survival related features to Gram-negative bacteria including the medically important Vibrio cholerae, which carries factors such as cholera toxin on phages. A novel filamentous phage, designated VFJΦ, was isolated in t...

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Main Authors: Qiuya Wang, Biao Kan, Ruibai Wang
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23936475/pdf/?tool=EBI
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author Qiuya Wang
Biao Kan
Ruibai Wang
author_facet Qiuya Wang
Biao Kan
Ruibai Wang
author_sort Qiuya Wang
collection DOAJ
description Filamentous phages have distinguished roles in conferring many pathogenicity and survival related features to Gram-negative bacteria including the medically important Vibrio cholerae, which carries factors such as cholera toxin on phages. A novel filamentous phage, designated VFJΦ, was isolated in this study from an ampicillin and kanamycin-resistant O139 serogroup V. cholerae strain ICDC-4470. The genome of VFJΦ is 8555 nucleotides long, including 12 predicted open reading frames (ORFs), which are organized in a modular structure. VFJΦ was found to be a mosaic of two groups of V. cholerae phages. A large part of the genome is highly similar to that of the fs2 phage, and the remaining 700 bp is homologous to VEJ and VCYΦ. This 700 bp region gave VFJΦ several characteristics that are not found in fs2 and other filamentous phages. In its native host ICDC-4470 and newly-infected strain N16961, VFJΦ was found to exist as a plasmid but did not integrate into the host chromosome. It showed a relatively wide host range but did not infect the classical biotype O1 V. cholerae strains. After infection, the host strains exhibited obvious inhibition of both growth and flagellum formation and had acquired a low level of ampicillin resistance and a high level of kanamycin resistance. The antibiotic resistances were not directly conferred to the hosts by phage-encoded genes and were not related to penicillinase. The discovery of VFJΦ updates our understanding of filamentous phages as well as the evolution and classification of V. cholerae filamentous phage, and the study provides new information on the interaction between phages and their host bacteria.
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spelling doaj.art-f88f42e6b65347c2a86e2b6263d09e0f2022-12-21T23:08:54ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0188e7093410.1371/journal.pone.0070934Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.Qiuya WangBiao KanRuibai WangFilamentous phages have distinguished roles in conferring many pathogenicity and survival related features to Gram-negative bacteria including the medically important Vibrio cholerae, which carries factors such as cholera toxin on phages. A novel filamentous phage, designated VFJΦ, was isolated in this study from an ampicillin and kanamycin-resistant O139 serogroup V. cholerae strain ICDC-4470. The genome of VFJΦ is 8555 nucleotides long, including 12 predicted open reading frames (ORFs), which are organized in a modular structure. VFJΦ was found to be a mosaic of two groups of V. cholerae phages. A large part of the genome is highly similar to that of the fs2 phage, and the remaining 700 bp is homologous to VEJ and VCYΦ. This 700 bp region gave VFJΦ several characteristics that are not found in fs2 and other filamentous phages. In its native host ICDC-4470 and newly-infected strain N16961, VFJΦ was found to exist as a plasmid but did not integrate into the host chromosome. It showed a relatively wide host range but did not infect the classical biotype O1 V. cholerae strains. After infection, the host strains exhibited obvious inhibition of both growth and flagellum formation and had acquired a low level of ampicillin resistance and a high level of kanamycin resistance. The antibiotic resistances were not directly conferred to the hosts by phage-encoded genes and were not related to penicillinase. The discovery of VFJΦ updates our understanding of filamentous phages as well as the evolution and classification of V. cholerae filamentous phage, and the study provides new information on the interaction between phages and their host bacteria.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23936475/pdf/?tool=EBI
spellingShingle Qiuya Wang
Biao Kan
Ruibai Wang
Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
PLoS ONE
title Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
title_full Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
title_fullStr Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
title_full_unstemmed Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
title_short Isolation and characterization of the new mosaic filamentous phage VFJ Φ of Vibrio cholerae.
title_sort isolation and characterization of the new mosaic filamentous phage vfj φ of vibrio cholerae
url https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23936475/pdf/?tool=EBI
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