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Arthrobacter ulcerisalmonis sp. nov., isolated from an ulcer of a farmed Atlantic salmon (Salmo salar), and emended description of the genus Arthrobacter sensu lato

Abstract : A Gram-stain positive, pleomorphic, oxidase-negative, non-motile isolate from the ulcer of a farmed Atlantic salmon ( Salmo salar ), designated strain T11b T , was subjected to a comprehensive taxonomic investigation. A comparative analysis of the 16S rRNA gene sequence showed highest similarities to the type strains of Pseudarthrobacter siccitolerans (98.1 %) and Arthrobacter methylotrophus and Pseudarthrobacter phenanthrenivorans (both 98.0 %). The highest ANI value observed between the assembled genome of T11b T and the publicly available Pseudarthrobacter and Arthrobacter type strain genomes were 81.15 and 80.99 %, respectively. The major respiratory quinone was menaquinone MK-9(H 2 ). The polyamine pattern contained predominantly spermidine. The polar lipid profile consisted of the major lipids diphosphatidylglycerol, phosphatidylglycerol, monogalactosyl-diacylglycerol and dimannosylglyceride. Minor amouts of trimannosyldiacylglycerol and phosphatidylinositol were also detected. The peptidoglycan was of the type A3α l -Lys– l -Ser –l -Thr– l -Ala (A11.23). In the fatty acid profile, anteiso and iso branched fatty acids predominated (anteiso C 15 : 0 , iso C 16 : 0 , anteiso C 17 : 0 ). Moderate to low DNA–DNA similarities, physiological traits as well as unique traits in the fatty acid pattern distinguished strain T11b T from the next related species. All these data point to the fact that strain T11b T represents a novel species of the genus Arthrobacter for which we propose the name Arthrobacter ulcerisalmonis sp. nov. The type strain is T11b T (=CIP 111621 T =CCM 8854 T =LMG 30632 T =DSM 107127 T ).
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https://hal-pasteur.archives-ouvertes.fr/pasteur-03259785
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Submitted on : Monday, June 14, 2021 - 2:38:13 PM
Last modification on : Tuesday, April 12, 2022 - 4:28:03 PM

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Peter Kämpfer, Hans-Jürgen Busse, Peter Schumann, Alexis Criscuolo, Dominique Clermont, et al.. Arthrobacter ulcerisalmonis sp. nov., isolated from an ulcer of a farmed Atlantic salmon (Salmo salar), and emended description of the genus Arthrobacter sensu lato. International Journal of Systematic and Evolutionary Microbiology, Microbiology Society, 2020, 70 (3), pp.1963-1968. ⟨10.1099/ijsem.0.004002⟩. ⟨pasteur-03259785⟩

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