Salmonid alphavirus infection causes skin dysbiosis in Atlantic salmon (Salmo salar L.) post-smolts

Interactions among host, microbiota and viral pathogens are complex and poorly understood. The goal of the present study is to assess the changes in the skin microbial community of Atlantic salmon (Salmo salar L.) in response to experimental infection with salmonid alphavirus (SAV). The salmon skin...

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Veröffentlicht in:PloS one 2017-03, Vol.12 (3), p.e0172856-e0172856
Hauptverfasser: Reid, Kristin M, Patel, Sonal, Robinson, Aaron J, Bu, Lijing, Jarungsriapisit, Jiraporn, Moore, Lindsey J, Salinas, Irene
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container_title PloS one
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creator Reid, Kristin M
Patel, Sonal
Robinson, Aaron J
Bu, Lijing
Jarungsriapisit, Jiraporn
Moore, Lindsey J
Salinas, Irene
description Interactions among host, microbiota and viral pathogens are complex and poorly understood. The goal of the present study is to assess the changes in the skin microbial community of Atlantic salmon (Salmo salar L.) in response to experimental infection with salmonid alphavirus (SAV). The salmon skin microbial community was determined using 16S rDNA pyrosequencing in five different experimental groups: control, 7 days after infection with low-dose SAV, 14 days after infection with low-dose SAV, 7 days after infection with high-dose SAV, and 14 days after infection with high-dose SAV. Both infection treatment and time after infection were strong predictors of the skin microbial community composition. Skin samples from SAV3 infected fish showed an unbalanced microbiota characterized by a decreased abundance of Proteobacteria such as Oleispira sp. and increased abundances of opportunistic taxa including Flavobacteriaceae, Streptococcaceae and Tenacibaculum sp. These results demonstrate that viral infections can result in skin dysbiosis likely rendering the host more susceptible to secondary bacterial infections.
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The goal of the present study is to assess the changes in the skin microbial community of Atlantic salmon (Salmo salar L.) in response to experimental infection with salmonid alphavirus (SAV). The salmon skin microbial community was determined using 16S rDNA pyrosequencing in five different experimental groups: control, 7 days after infection with low-dose SAV, 14 days after infection with low-dose SAV, 7 days after infection with high-dose SAV, and 14 days after infection with high-dose SAV. Both infection treatment and time after infection were strong predictors of the skin microbial community composition. Skin samples from SAV3 infected fish showed an unbalanced microbiota characterized by a decreased abundance of Proteobacteria such as Oleispira sp. and increased abundances of opportunistic taxa including Flavobacteriaceae, Streptococcaceae and Tenacibaculum sp. 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The goal of the present study is to assess the changes in the skin microbial community of Atlantic salmon (Salmo salar L.) in response to experimental infection with salmonid alphavirus (SAV). The salmon skin microbial community was determined using 16S rDNA pyrosequencing in five different experimental groups: control, 7 days after infection with low-dose SAV, 14 days after infection with low-dose SAV, 7 days after infection with high-dose SAV, and 14 days after infection with high-dose SAV. Both infection treatment and time after infection were strong predictors of the skin microbial community composition. Skin samples from SAV3 infected fish showed an unbalanced microbiota characterized by a decreased abundance of Proteobacteria such as Oleispira sp. and increased abundances of opportunistic taxa including Flavobacteriaceae, Streptococcaceae and Tenacibaculum sp. These results demonstrate that viral infections can result in skin dysbiosis likely rendering the host more susceptible to secondary bacterial infections.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>28264056</pmid><doi>10.1371/journal.pone.0172856</doi><oa>free_for_read</oa></addata></record>
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subjects Alphavirus - genetics
Alphavirus Infections - veterinary
Animals
Bacteria
Bacterial diseases
Biodiversity
Biology and Life Sciences
Cluster Analysis
Communities
Community composition
Disease susceptibility
Dysbacteriosis
Dysbiosis
Experimental infection
Fish
Fish Diseases - virology
Flavobacteriaceae
Health aspects
High-Throughput Nucleotide Sequencing
Medicine and Health Sciences
Microbiota
Microbiota (Symbiotic organisms)
Microorganisms
Norway
Proteobacteria
Risk factors
RNA virus infections
RNA, Ribosomal, 16S - genetics
rRNA 16S
Salmo salar
Salmo salar - virology
Salmon
Seawater
Skin
Skin - microbiology
Skin - virology
Streptococcaceae
Tenacibaculum
Togaviridae
Viral infections
Viral Load
title Salmonid alphavirus infection causes skin dysbiosis in Atlantic salmon (Salmo salar L.) post-smolts
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