Name: Nitratiruptor tergarcus Nakagawa et al. 2005

Category: Species

Proposed as: sp. nov.

Etymology: terg.ar’cus. L. neut. n. tergum, back; L. masc. n. arcus, of an arc (also as genitive); N.L. masc. n. tergarcus, of a back arc (geological term)

Pronunciation, gender: terg-AR-kus, masculine

Type strain: DSM 16512; JCM 12459; MI55-1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB175499 Analyse FASTA

Valid publication: Nakagawa S, Takai K, Inagaki F, Horikoshi K, Sako Y. Nitratiruptor tergarcus gen. nov., sp. nov. and Nitratifractor salsuginis gen. nov., sp. nov., nitrate-reducing chemolithoautotrophs of the epsilon-Proteobacteria isolated from a deep-sea hydrothermal system in the Mid-Okinawa Trough. Int J Syst Evol Microbiol 2005; 55:925-933.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 55, part 2 of the IJSEM. Int J Syst Evol Microbiol 2005; 55:1399-1402.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Nitratiruptor Nakagawa et al. 2005. Publication: Nakagawa S, Takai K, Inagaki F, Horikoshi K, Sako Y. Nitratiruptor tergarcus gen. nov., sp. nov. and Nitratifractor salsuginis gen. nov., sp. nov., nitrate-reducing chemolithoautotrophs of the epsilon-Proteobacteria isolated from a deep-sea hydrothermal system in the Mid-Okinawa Trough. Int J Syst Evol Microbiol 2005; 55:925-933.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 4 times in PubMed until 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.
  • 🧍 In the paper by Nakagawa et al. 2005, the meaning of the neo-Latin noun tergarcus is erroneously provided as "of a black arc" in place of "of a back arc". Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.

Parent taxon: Nitratiruptor Nakagawa et al. 2005

Assigned by: Nakagawa S, Takai K, Inagaki F, Horikoshi K, Sako Y. Nitratiruptor tergarcus gen. nov., sp. nov. and Nitratifractor salsuginis gen. nov., sp. nov., nitrate-reducing chemolithoautotrophs of the epsilon-Proteobacteria isolated from a deep-sea hydrothermal system in the Mid-Okinawa Trough. Int J Syst Evol Microbiol 2005; 55:925-933.

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Record number: 778670