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Responses to Moritella viscosa in skin and spleen of Atlantic salmon

ABSTRACT: Responses to Moritella viscosa in skin and spleen of Atlantic salmon

PROVIDER: PRJNA720609 | ENA |

REPOSITORIES: ENA

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Responses to Moritella viscosa in skin and spleen of Atlantic salmon

Project description:Bacterial pathogen Moritella viscosa, the causative agent of winter ulcer, causes heavy losses in Atlantic salmon aquaculture. The study compared responses in salmon reared under normal condition (G100) and fish exposed to hypoxia - 60% saturation of dissolved oxygen - at early life (G60). G60 showed lower survival after challenge. Analyses were performed in the most affected tissues: skin and spleen

2021-04-09 | GSE171693 | GEO

Differential expression of miRNAs and mRNAs in Moritella viscosa challenge Atlantic salmon

Project description:Moritella viscosa is a bacterial pathogen causing winter-ulcer disease in Atlantic salmon. The lesions on affected fish lead to increased mortality, decreased fish welfare, and inferior meat quality in farmed salmon. MicroRNAs (miRNAs) are small non-coding RNAs involved in post-transcriptional regulation by guiding the miRNA induced silencing complex to specific mRNA transcripts (target genes). The goal of this study was to identify miRNAs responding to Moritella viscosa in salmon by investigating miRNA expression in head-kidney and the muscle/skin from lesion sites caused by the pathogen. Protein coding gene expression was investigated by microarray analysis in the same materials.

2022-08-14 | GSE211004 | GEO

Responses of Atlantic salmon to vaccination and challenge with salmon alphavirus (SAV) and Moritella viscosa

Project description:Salmon alphavirus (SAV) and Moritella viscosa causing respectively pancreatic disease and winter ulcer are among the most important pathogens threatening Atlantic salmon aquaculture. Fish is protected by vaccination with different rate of success. Here, responses to vaccination were assessed followed with pathogen challenges of vaccinated salmon and saline injected control.

2021-04-23 | GSE173130 | GEO

Significance of zinc on skin molecular signatures in Atlantic salmon with Winter ulcer disease

Project description:Vaccinated seawater adapted Atlantic salmon (average weight ~340 g) fed with variable levels of zinc were infected with Moritella viscosa at VESO Vikan. Early responses in skin to infection were investigated 4 days post challenge. Effect of chronic ulceration was investigated 35 days post challenge.

2021-04-09 | GSE171738 | GEO

Responses of Atlantic salmon to vaccination and challenge with salmon alphavirus (SAV) and Moritella viscosa

Project description:Responses of Atlantic salmon to vaccination and challenge with salmon alphavirus (SAV) and Moritella viscosa

| PRJNA723861 | ENA

Co-cultivation and transcriptome sequencing of two co-existing fish pathogens Moritella viscosa and Aliivibrio wodanis.

Project description:Aliivibrio wodanis and Moritella viscosa have often been isolated together from fish with winter ulcer. Little is known about the interaction between the two bacterial species and how the presence of one bacterial species affects the behaviour of the other. The impact on bacterial growth in co-culture was investigated in vitro, and the presence of A. wodanis has a strong inhibitorial effect on M. viscosa. Further, we have sequenced the complete genomes of these two marine Gram-negative species, and have performed transcriptome analysis of the bacterial gene expression levels from in vivo samples. Using bacterial implants in the fish abdomen, we demonstrate that the presence of A. wodanis is altering the gene expression levels of M. viscosa compared to when the bacteria are implanted separately. The impeding effect on growth and the change in the global gene expression pattern of M. viscosa when the two pathogens co-exists is discussed in this paper.

2014-11-30 | E-MTAB-2851 | biostudies-arrayexpress

Moritella viscosa 06/09/139

Project description:The complete genome sequence of Moritella viscosa 06/09/139

| PRJEB6964 | ENA

Responses to ectoparasite salmon louse (Lepeophtheirus salmonis) in spleen of Atlantic salmon

Project description:Gene expression profiling revealed rapid activation of immunity, both local and systemic, which however did not provide protection of fish against the parasite. Major changes of transcriptome responses wwere observed between days 5 and 10 Atlantic salmon was challenged with L. salmonis at the copepod stage. Skin, spleen, and head kidney were sampled from challenged and control fish at 1, 3, 5 dpi (corresponding to the copepod stage); 10 and 15 dpi (chalimus stage). A total of forty samples of spleen and skin form infected salmon (4 individuals from the 5 time points) were used for microarray analyses.. Test samples were labeled with Cy5 and hybridized to pooled control samples labeled with Cy3 from the same time-points. Competitive hybridization to the arrays was followed by washing, scanning, image analysis, and data analysis. Selected genes were analyzed with RT-qPCR.

2011-02-03 | E-GEOD-26984 | biostudies-arrayexpress

Responses to ectoparasite salmon louse (Lepeophtheirus salmonis) in skin of Atlantic salmon

2011-02-03 | E-GEOD-26981 | biostudies-arrayexpress

Responses to ectoparasite salmon louse (Lepeophtheirus salmonis) in Atlantic salmon

Project description:This SuperSeries is composed of the following subset Series: GSE26981: Responses to ectoparasite salmon louse (Lepeophtheirus salmonis) in skin of Atlantic salmon GSE26984: Responses to ectoparasite salmon louse (Lepeophtheirus salmonis) in spleen of Atlantic salmon Refer to individual Series

2011-02-03 | E-GEOD-27013 | biostudies-arrayexpress

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