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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.
- Source :
-
FEMS microbiology letters [FEMS Microbiol Lett] 2021 Mar 03; Vol. 368 (4). - Publication Year :
- 2021
-
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 five 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.<br /> (© The Author(s) 2021. Published by Oxford University Press on behalf of FEMS.)
- Subjects :
- Aeromonas classification
Aeromonas drug effects
Aeromonas isolation & purification
Animals
Anti-Bacterial Agents pharmacology
Chloramphenicol Resistance genetics
Fish Diseases microbiology
France
Genome, Bacterial genetics
Integrases genetics
Microbial Sensitivity Tests
Open Reading Frames
Phylogeny
Salmon
Aeromonas genetics
Genomic Islands genetics
Plasmids genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1574-6968
- Volume :
- 368
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- FEMS microbiology letters
- Publication Type :
- Academic Journal
- Accession number :
- 33605980
- Full Text :
- https://doi.org/10.1093/femsle/fnab021