Comparison between genome sequences of Chilean Tenacibaculum dicentrarchi isolated from red conger eel (Genypterus chilensis) and Atlantic salmon (Salmo salar) focusing on bacterial virulence determinants

Saldarriaga‐Córdoba, Mónica; Irgang, Rute; Avendaño‐Herrera, Rubén

doi:10.1111/jfd.13503

Cited by 12 publications

(29 citation statements)

References 146 publications

(183 reference statements)

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“…Resistance‐related determinants identified included tetracycline (translation elongation factor G‐WP_101916661 and tetracycline resistance protein TetQ‐WP_101917382), fluoroquinolones (gyrA‐WP_193706303 and gyrB‐WP_193706307), betalactamases (metal‐dependent hydrolases of the beta‐lactamase superfamily I‐WP_101916599) and triclosan and isoniazid (fabV‐WP_101916498). Excepting fabV , all of these genes were previously identified in T. dicentrarchi (Saldarriaga‐Córdoba et al., 2021). RAST analysis also identified genes associated with resistance to toxic compounds (e.g.…”

Section: Resultsmentioning

confidence: 88%

“…Regarding the stress response (e.g. osmotic, oxidative and periplasmic stress), the Chilean T. piscium isolates and type strain displayed the same genes identified in T. dicentrarchi (Supplementary Table 2) (Saldarriaga‐Córdoba et al., 2021).…”

Section: Resultsmentioning

confidence: 94%

“…Contiguous genome sequences were assembled using T. piscium TNO020 T as the reference genome (accession number GCA_900239505). Average nucleotide identity (ANI) and in silico DNA–DNA hybridization ( is DDH) analyses were performed (Saldarriaga‐ Cordoba et al., 2021).…”

Section: Methodsmentioning

confidence: 99%

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Isolation, identification, virulence potential and genomic features of Tenacibaculum piscium isolates recovered from Chilean salmonids

Avendaño‐Herrera

Olsen

Saldarriaga‐Córdoba

et al. 2022

Transbounding Emerging Dis

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Tenacibaculum piscium, a gram‐negative bacterium isolated from the skin ulcers of sea‐farmed fish, has only been described in Norway. In the present study, we examined 16 Chilean Tenacibaculum isolates recovered from different organs in moribund and dead Atlantic salmon (Salmo salar), Rainbow trout (Oncorhynchus mykiss) and Coho salmon (Oncorhynchus kisutch) cultured at different fish farms between 2014 and 2018. The present study applied biochemical, phenotypic, fatty acid and whole‐genome sequence‐based analyses to confirm the taxonomic status of the Chilean isolates. The obtained results are the first to confirm the presence of T. piscium in Chile and in Coho salmon, thus extending the recognized geographical and species distribution of this bacterium. Subsequent bath‐challenge assays in Atlantic salmon utilizing three T. piscium isolates obtained from different hosts resulted in low cumulative mortality (i.e. 0–35%), even after exposure to an unnaturally high concentration of bacterial cells (i.e. > 107 cells/ml). However, scale loss and frayed fins were observed in dead fish. In silico whole‐genome analysis detected various genes associated with iron acquisition, encoding of the type IX secretion system and cargo proteins, resistance to tetracycline and fluoroquinolones and stress responses. These data represent an important milestone towards a better understanding on the genomic repertoire of T. piscium.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 94%

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Isolation, identification, virulence potential and genomic features of Tenacibaculum piscium isolates recovered from Chilean salmonids

Avendaño‐Herrera

Olsen

Saldarriaga‐Córdoba

et al. 2022

Transbounding Emerging Dis

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“…infections. The current treatments of choice for tenabaculosis caused by T. dicentrarchi in farmed salmon are oral FFC and injectable OTC (Saldarriaga‐Córdoba et al., 2021). Of these, injectable OTC has obtained the best field results.…”

Section: Resultsmentioning

confidence: 99%

“…DN‐00432/2021, March 12th, 2021) leave FFC as the only treatment alternative. In addition, a recent genomic study comparing gene features found in Atlantic salmon and red conger eel isolates have denoted that eight T. dicentrarchi isolates possess genes related to tetracycline resistance (Saldarriaga‐Córdoba et al., 2021).…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the in vitro susceptibility of Tenacibaculum dicentrarchi to tiamulin using minimum inhibitory concentration tests

Irgang

Avendaño‐Herrera

2022

Journal of Fish Diseases

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Tenacibaculosis, an ulcerative marine disease, has been reported globally in all salmon-producing areas (Olsen et al., 2019). This disease ranks third among infectious diseases affecting salmonids in Chile, a country second only to Norway in salmon production worldwide. The prevalence of tenacibaculosis in Chile appears to be dominantly caused by Tenacibaculum dicentrarchi (Irgang et al., 2021). The first report of T. dicentrarchi in Chile was associated with mortalities of Atlantic salmon (Salmo salar) occurring at a farming site in Puerto Montt (Avendaño-Herrera et al., 2016).Since then, this bacterium has been reported in rainbow trout (Oncorhynchus mykiss) and Coho salmon (Oncorhynchus kisutch), which is in addition to an expansion of geographical range that

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Comparative genomic assessment of members of genus Tenacibaculum: an exploratory study

2023

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Comparison between genome sequences of Chilean Tenacibaculum dicentrarchi isolated from red conger eel (Genypterus chilensis) and Atlantic salmon (Salmo salar) focusing on bacterial virulence determinants

Abstract: All genome sequencing data have been deposited in GenBank.

Cited by 12 publications

References 146 publications

Isolation, identification, virulence potential and genomic features of Tenacibaculum piscium isolates recovered from Chilean salmonids

Isolation, identification, virulence potential and genomic features of Tenacibaculum piscium isolates recovered from Chilean salmonids

Evaluation of the in vitro susceptibility of Tenacibaculum dicentrarchi to tiamulin using minimum inhibitory concentration tests

Comparative genomic assessment of members of genus Tenacibaculum: an exploratory study

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