Improvements of virulence factor phenotypic tests for Aeromonas salmonicida subsp. salmonicida , a major fish pathogen

2021 ◽  
Author(s):  
Sarah B. Girard ◽  
Valérie E. Paquet ◽  
Steve J. Charette
Keyword(s):  
Virulence Factor ◽  
Aeromonas Salmonicida ◽  
Fish Pathogen ◽  
Phenotypic Tests

AsaGEI2d: a new variant of a genomic island identified in a group of Aeromonas salmonicida subsp. salmonicida isolated from France, which bears the pAsa7 plasmid

2021 ◽  
Author(s):  
Antony T Vincent ◽  
Laurent Intertaglia ◽  
Victor Loyer ◽  
Valérie E Paquet ◽  
Émilie Adouane ◽  
...  
Keyword(s):  
Genomic Island ◽  
Insertion Site ◽  
Aeromonas Salmonicida ◽  
Genomic Islands ◽  
The Other ◽  
Fish Pathogen ◽  
Integrase Gene ◽  
New Variant ◽  
Cat Gene ◽  
Unique Genes

Abstract Genomic islands (Aeromonas salmonicida genomic islands, AsaGEIs) are found worldwide in many isolates of Aeromonas salmonicida subsp. salmonicida, a fish pathogen. To date, five variants of AsaGEI (1a, 1b, 2a, 2b and 2c) have been described. Here, we investigate a sixth AsaGEI, which was identified in France between 2016 and 2019 in 20 A. salmonicida subsp. salmonicida isolates recovered from sick salmon all at the same location. This new AsaGEI shares the same insertion site in the chromosome as the other AsaGEI2s as they all have a homologous integrase gene. This new AsaGEI was thus named AsaGEI2d, and has 5 unique genes compared to the other AsaGEIs. The isolates carrying AsaGEI2d also bear the plasmid pAsa7, which was initially found in an isolate from Switzerland. This plasmid provides resistance to chloramphenicol thanks to a cat gene. This study reveals more about the diversity of the AsaGEIs.

scholarly journals Functional Tn5393-Like Transposon in the R Plasmid pRAS2 from the Fish Pathogen Aeromonas salmonicida subspecies salmonicida Isolated in Norway

2000 ◽  
Vol 66 (12) ◽  
pp. 5533-5535 ◽  
Author(s):  
Trine M. L'Ab�e-Lund ◽  
Henning S�rum
Keyword(s):  
Ecological Niche ◽  
Aeromonas Salmonicida ◽  
Fish Pathogen ◽  
Agricultural Habitat ◽  
First Time

ABSTRACT Tn5393c containing strA-strB was identified as part of R plasmid pRAS2 from the fish pathogen Aeromonas salmonicida subsp. salmonicida. This is the first time an intact and active transposon in the Tn5393 family has been reported in an ecological niche other than an agricultural habitat.

scholarly journals The genome of Aeromonas salmonicida subsp. salmonicida A449: insights into the evolution of a fish pathogen

BMC Genomics ◽  
2008 ◽  
Vol 9 (1) ◽  
pp. 427 ◽  
Author(s):  
Michael E Reith ◽  
Rama K Singh ◽  
Bruce Curtis ◽  
Jessica M Boyd ◽  
Anne Bouevitch ◽  
...  
Keyword(s):  
Aeromonas Salmonicida ◽  
Fish Pathogen

Polymerase Chain Reaction (PCR)-based Typing Analysis of Atypical Isolates of the Fish Pathogen Aeromonas salmonicida

1999 ◽  
Vol 22 (3) ◽  
pp. 403-411 ◽  
Author(s):  
Steiner Høie ◽  
Inger Dalsgaard ◽  
Inger Lise Aase ◽  
Marianne Heum ◽  
Jacinta M. Thornton ◽  
...  
Keyword(s):  
Polymerase Chain Reaction ◽  
Aeromonas Salmonicida ◽  
Fish Pathogen ◽  
Chain Reaction ◽  
Polymerase Chain
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