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Volume 70, Issue 12

sp. nov., isolated from skin ulcers of sea-farmed fish, and description of sp. nov. with subdivision into genomovars and Free

Abstract

Results of previous multilocus sequence and whole-genome-based analyses have suggested that a homogeneous group of isolates belonging to the genus , represented by strain TNO020 and associated with skin ulcer development in sea-farmed fish, represents an as-yet-undescribed species. Comparative whole-genome analysis performed in the present study clustered five isolates, including TNO020, in a distinct lineage within the genus . Phenotypic differences, high intra-cluster average nucleotide identity (ANI) values and low ANI values with other species support the proposal of a novel species, for which we propose the name sp. nov. with strain TNO020 (=CCUG 73833=NCIMB 15240) as the type strain. Further, large-scale genome analyses confirmed the existence of two different phylogenetic lineages within ‘’, a species effectively but not validly published previously. ANI values just above the species delineation threshold of 95–96 % confirmed that both lineages belong to the same species. This result was also supported by DNA–DNA hybridization values. Phenotypically, the two conspecific lineages are distinguishable by differences in growth temperature range and ability to degrade -proline. For the group of isolates already commonly known as ‘’, we propose the name sp. nov., with strain TNO006 (=CCUG 73831=NCIMB 15238) as the type strain. We further propose the subdivision of sp. nov. into two genomovars, genomovar with strain TNO006 (=CCUG 73831=NCIMB 15238) as the type strain and genomovar with strain TNO010 (=CCUG 73832=NCIMB 15239) as the type strain.

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  • Accepted:
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Keyword(s): cgMLST , tenacibaculosis , Tenacibaculum finnmarkense , Tenacibaculum finnmarkense genomovar finnmarkense , Tenacibaculum finnmarkense genomovar ulcerans and Tenacibaculum piscium
© 2020 The Authors
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2020-10-20
2024-04-18
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Tenacibaculum piscium sp. nov., isolated from skin ulcers of sea-farmed fish, and description of Tenacibaculum finnmarkense sp. nov. with subdivision into genomovars finnmarkense and ulcerans
Int J Syst Evol Microbiol 70, 6079 (2020); https://doi.org/10.1099/ijsem.0.004501
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