Halorhabdus

Halorhabdus
Scientific classification
Domain:	Archaea
Kingdom:	Methanobacteriati
Phylum:	Methanobacteriota
Class:	Halobacteria
Order:	Halobacteriales
Family:	Haloarculaceae
Genus:	Halorhabdus; Wainø et al. 2000 emend. Antunes et al. 2008
Type species
	Halorhabdus utahensis; Wainø et al. 2000
Species
	H. amylolytica; H. rudnickae; H. salina; H. tiamatea; H. utahensis;

Halorhabdus is a genus of halophilic archaeans in the Haloarculaceae. With an extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).

16S rRNA based LTP_07_2026

53 marker proteins based GTDB 11-RS232

Halorhabdus

H. rudnickae

	H. tiamatea

	H. utahensis

Halorhabdus

	H. amylolytica Wang et al. 2022

	H. rudnickae Albuquerque et al. 2016

H. salina Wang et al. 2022

	H. tiamatea Antunes et al. 2008

	H. utahensis Waino et al. 2000

References

1 2 Halorhabdus in LPSN; Freese, H. M.; Meier-Kolthoff, J. P.; Sardà Carbasse, J.; Afolayan, A. O.; Göker, M. (2026). "TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity". Nucleic Acids Research. 54 (D1): D884–D891. doi:10.1093/nar/gkaf1110.
↑ C.L. Schoch. "Halorhabdus". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2026-08-01.
↑ "The LTPlus". The All-Species Living Tree Project. Retrieved 1 August 2026.
↑ "LTP_all tree in newick format". The All-Species Living Tree Project. Retrieved 1 August 2026.
↑ Rossello-Mora, Ramon; Viver, Tomeu; Palmer-Rodríguez, Pere; Westram, Ralf; Bustos-Caparros, Esteban; Gago, Joan Francisco; Gonzalez-Mendez, Jaime; Llabrés, Mercè; Ludwig, Wolfgang; Amann, Rudolf (22 April 2026). "A pipeline for improved 16S rRNA gene-based phylogeny and diversity analyses of Bacteria and Archaea". Nature Portfolio. doi:10.21203/rs.3.rs-9370187/v1.
↑ "GTDB release 11-RS232". Genome Taxonomy Database. Retrieved 1 May 2026.
↑ "ar53_r232.sp_label". Genome Taxonomy Database. Retrieved 1 May 2026.
↑ "Taxon History". Genome Taxonomy Database. Retrieved 1 May 2026.

Waino M, Tindall BJ, Ingvorsen K (2000). "Halorhabdus utahensis gen. nov., sp. nov., an aerobic, extremely halophilic member of the Archaea from Great Salt Lake, Utah". Int. J. Syst. Evol. Microbiol. 50: 183–190. doi:10.1099/00207713-50-1-183. PMID 10826803.
Euzeby JP, Boemare NE (2000). "The modern Latin word rhabdus belongs to the feminine gender, inducing necessary corrections according to Rules 65(2),12c(1) and 13b of the Bacteriological Code (1990 Revision)". Int. J. Syst. Evol. Microbiol. 50 (4): 1691–1692. doi:10.1099/00207713-50-4-1691. PMID 10939678.
Oren A, Ventosa A (2000). "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the meetings, 16 August 1999, Sydney, Australia". Int. J. Syst. Evol. Microbiol. 50 (3): 1405–1407. doi:10.1099/00207713-50-3-1405. PMID 10843089.

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[LPSN-1] 1 2 Halorhabdus in LPSN; Freese, H. M.; Meier-Kolthoff, J. P.; Sardà Carbasse, J.; Afolayan, A. O.; Göker, M. (2026). "TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity". Nucleic Acids Research. 54 (D1): D884–D891. doi:10.1093/nar/gkaf1110.

[NCBI-2] C.L. Schoch. "Halorhabdus". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2026-08-01.

[3] "The LTPlus". The All-Species Living Tree Project. Retrieved 1 August 2026.

[4] "LTP_all tree in newick format". The All-Species Living Tree Project. Retrieved 1 August 2026.

[5] Rossello-Mora, Ramon; Viver, Tomeu; Palmer-Rodríguez, Pere; Westram, Ralf; Bustos-Caparros, Esteban; Gago, Joan Francisco; Gonzalez-Mendez, Jaime; Llabrés, Mercè; Ludwig, Wolfgang; Amann, Rudolf (22 April 2026). "A pipeline for improved 16S rRNA gene-based phylogeny and diversity analyses of Bacteria and Archaea". Nature Portfolio. doi:10.21203/rs.3.rs-9370187/v1.

[about-6] "GTDB release 11-RS232". Genome Taxonomy Database. Retrieved 1 May 2026.

[tree-7] "ar53_r232.sp_label". Genome Taxonomy Database. Retrieved 1 May 2026.

[taxon_history-8] "Taxon History". Genome Taxonomy Database. Retrieved 1 May 2026.

Halorhabdus

Phylogeny

See also

References

Further reading