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Keywords = Pasteurella atlantica

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22 pages, 2186 KiB  
Article
Genomic Analysis of Pasteurella atlantica Provides Insight on Its Virulence Factors and Phylogeny and Highlights the Potential of Reverse Vaccinology in Aquaculture
by Rebecca Marie Ellul, Panos G. Kalatzis, Cyril Frantzen, Gyri Teien Haugland, Snorre Gulla, Duncan John Colquhoun, Mathias Middelboe, Heidrun Inger Wergeland and Anita Rønneseth
Microorganisms 2021, 9(6), 1215; https://doi.org/10.3390/microorganisms9061215 - 4 Jun 2021
Cited by 9 | Viewed by 5887
Abstract
Pasteurellosis in farmed lumpsuckers, Cyclopterus lumpus, has emerged as a serious disease in Norwegian aquaculture in recent years. Genomic characterization of the causative agent is essential in understanding the biology of the bacteria involved and in devising an efficient preventive strategy. The [...] Read more.
Pasteurellosis in farmed lumpsuckers, Cyclopterus lumpus, has emerged as a serious disease in Norwegian aquaculture in recent years. Genomic characterization of the causative agent is essential in understanding the biology of the bacteria involved and in devising an efficient preventive strategy. The genomes of two clinical Pasteurella atlantica isolates were sequenced (≈2.3 Mbp), and phylogenetic analysis confirmed their position as a novel species within the Pasteurellaceae. In silico analyses revealed 11 genomic islands and 5 prophages, highlighting the potential of mobile elements as driving forces in the evolution of this species. The previously documented pathogenicity of P. atlantica is strongly supported by the current study, and 17 target genes were recognized as putative primary drivers of pathogenicity. The expression level of a predicted vaccine target, an uncharacterized adhesin protein, was significantly increased in both broth culture and following the exposure of P. atlantica to lumpsucker head kidney leucocytes. Based on in silico and functional analyses, the strongest gene target candidates will be prioritized in future vaccine development efforts to prevent future pasteurellosis outbreaks. Full article
(This article belongs to the Topic Veterinary Infectious Diseases)
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