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Investigation of M annheimia haemolytica bacteriophages relative to host diversity
Author(s) -
Hsu Y.H.,
Cook S.R.,
Alexander T.W.,
Klima C.L.,
Niu Y.D.,
Selinger L.B.,
McAllister T.A.
Publication year - 2013
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.12185
Subject(s) - prophage , siphoviridae , lytic cycle , biology , microbiology and biotechnology , virulence , serotype , myoviridae , lysogenic cycle , genetic diversity , host adaptation , virology , genome , host (biology) , bacteriophage , pathogen , genetics , virus , gene , population , escherichia coli , demography , sociology
Aims This study aimed to characterize the impact of lytic and temperate bacteriophages on the genetic and phenotypic diversity of M annheimia haemolytica from feedlot cattle. Methods and Results Strictly lytic phages were not detected from bovine nasopharyngeal ( n = 689) or water trough ( n = 30) samples, but M yoviridae ‐ or S iphoviridae ‐like phages were induced from 54 of 72 M . haemolytica strains by mitomycin C, occasionally from the same strain. Phages with similar restriction fragment length polymorphism profiles ( RFLP ≥70% relatedness) shared common host serotypes 1 or 2 ( P < 0·00 0 1). Likewise, phages with similar RFLP tended to occur in genetically related host bacteria (70–79% similarity). Host range assays showed that seven phages from host serotypes 1, 2 and 6 lysed representative strains of serotypes 1, 2 or 8. The genome of vB_MhM_1152AP from serotype 6 was found to be collinear with P2‐like phage φMhaA1‐PHL101. Conclusions Prophages are a significant component of the genome of M . haemolytica and contribute significantly to host diversity. Further characterization of the role of prophage in virulence and persistence of M . haemolytica in cattle could provide insight into approaches to control this potential respiratory pathogen. Significance and Impact of the Study This study demonstrated that prophages are widespread within the genome of M . haemolytica isolates and emphasized the challenge of isolating lytic phage as a therapeutic against this pathogen.