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Thermococcus bergensis sp. Nov., a novel hyperthermophilic starch-degrading archaeon

Lookup NU author(s): Emeritus Professor Hans-Peter Klenk

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

© 2021 by the authors. Licensee MDPI, Basel, Switzerland.A novel hyperthermophilic archaeon, termed strain T7324T, was isolated from a mixed sulfate-reducing consortium recovered from hot water produced from a deep North Sea oil reservoir. The isolate is a strict anaerobic chemo-organotroph able to utilize yeast extract or starch as a carbon source. The genes for a number of sugar degradation enzymes and glutamate dehydrogenase previously attributed to the sulfate reducing strain of the consortium (Archaeoglobus fulgidus strain 7324) were identified in the nearly completed genome sequence. Sequence analysis of the 16S rRNA gene placed the strain in the Thermococcus genus, but with an average nucleotide identity that is less than 90% to its closest relatives. Phylogenomic treeing reconstructions placed the strain on a distinct lineage clearly separated from other Thermococcus spp. The results indicate that the strain T7324T represents a novel species, for which the name Thermococcus bergensis sp. nov. is proposed. The type strain is T7324T (=DSM 27149T = KCTC 15808T).

Publication metadata

Author(s): Birkeland N-K, Bunk B, Sproer C, Klenk H-P, Schonheit P

Publication type: Article

Publication status: Published

Journal: Biology

Year: 2021

Volume: 10

Issue: 5

Online publication date: 29/04/2021

Acceptance date: 27/04/2021

Date deposited: 03/06/2021

ISSN (electronic): 2079-7737

Publisher: MDPI AG

URL: https://doi.org/10.3390/biology10050387

DOI: 10.3390/biology10050387

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