Halanaerobiales

The Halanaerobiales are an order of bacteria placed within the class Clostridia, and encompassing two families, the Halanaerobiaceae and the Halobacteroidaceae. Originally placed within the highly polyphyletic class Clostridia, according to the NCBI and LPSN, it is now thought to lie outside the Bacillota.^{[citation needed]} Halanaerobiales are halophilic obligate anaerobes with a fermentative or homoacetogenic metabolism.^[1]

Halanaerobiales
Scientific classification
Domain:	Bacteria
Phylum:	Bacillota
Class:	"Halanaerobiia"
Order:	Halanaerobiales corrig. Rainey and Zhilina 1995
Families
Halanaerobiaceae Halobacteroidaceae

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)^[2] and National Center for Biotechnology Information (NCBI).^[3]

16S rRNA based LTP_06_2022[4][5][6]

120 single copy marker proteins based GTDB 08-RS214[7][8][9]

Anoxybacter Halanaerobiaceae Halarsenatibacter Halothermothrix Halocella corrig. Simankova et al. 1994 Halanaerobium Halobacteroidaceae Acetohalobium Sporohalobacter Fuchsiella Zhilina et al. 2012 Selenihalanaerobacter Halanaerobaculum Hedi et al. 2009 Halobacteroides Natroniella Orenia (incl. Halonatronum) Halanaerobacter

"Anoxybacterales" "Anoxybacteraceae" Anoxybacter Zeng et al. 2015 DY22613 Halanaerobiales DTU029 "Iocasia" Zhang et al. 2021 "Halothermotrichaceae" Halothermothrix Cayol et al. 1994 "Halarsenatibacteraceae" Halarsenatibacter Switzer Blum et al. 2010 Halanaerobiaceae Halanaerobium corrig. Zeikus et al. 1984 "Halobacteroidales" "Acetohalobiaceae" "Ca.Frackibacter" Daly et al. 2016 Selenihalanaerobacter Switzer Blum et al. 2001 Fuchsiella Zhilina et al. 2012 Acetohalobium Zhilina and Zavarzin 1990 Sporohalobacter Oren et al. 1988 Halobacteroidaceae Halonatronum Zhilina et al. 2001 Orenia Rainey & Stackebrandt 1995 Natroniella Zhilina et al. 1996 Halobacteroides Oren et al. 1984 Halanaerobacter corrig. Liaw & Mah 1996

See also

• List of bacterial orders
• List of bacteria genera

References

1. Singh OV (2012). Extremophiles: Sustainable Resources and Biotechnological Implications. John Wiley & Sons. pp. 76–79. ISBN 978-1-118-10300-5.
2. J.P. Euzéby. "Halanaerobiales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Archived from the original on 2013-01-27. Retrieved 2011-11-17.
3. Sayers; et al. "Halanaerobiales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2011-06-05.
4. "The LTP". Retrieved 10 May 2023.
5. "LTP_all tree in newick format". Retrieved 10 May 2023.
6. "LTP_06_2022 Release Notes" (PDF). Retrieved 10 May 2023.
7. "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
8. "bac120_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
9. "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.

Further reading

Bardavid, Rahel Elevi; Oren, Aharon (2012). "The amino acid composition of proteins from anaerobic halophilic bacteria of the order Halanaerobiales". Extremophiles. 16 (3): 567–572. doi:10.1007/s00792-012-0455-y.