Abstract
Ther.mo.ha.lo.bac.te.ra.ce'ae. N.L. masc. n.
Thermohalobacter
, type genus of the family; suff.
‐aceae
, ending to denote a family; N.L. fem. pl. n.
Thermohalobacteraceae
, the
Thermohalobacter
family.
Free‐living bacteria that mainly occur in anoxic saline environments. Cells are not pigmented and have a Gram‐positive type of cell wall. Gram‐stain reaction can be negative or positive. Typically slender rod‐shaped cells that are motile by flagella. Several strains form heat‐resistant spores. Mainly euryhaline, moderately thermophilic and halophilic. Members of the family are strictly anaerobic bacteria that utilize carbohydrates or peptides by fermentation. Cellular fatty acid patterns are dominated by
iso
‐C
15:0
and
iso
‐C
15:0
DMA. The family currently accommodates members of the genera
Thermohalobacter
,
Caldisalinibacter
,
Caloranaerobacter
,
Brassicibacter
,
Sporosalibacterium
, and
Clostridiisalibacter
, which were previously affiliated with the family
Clostridiaceae
. The affiliation of novel species to this family depends on the phylogenetic position, which should be determined on the basis of comparative sequence analyses of 16S rRNA genes or genomes.
DNA G + C content (mol%):
28–33.
Type genus:
Thermohalobacter
Cayol et al. 2000.
Taxonomic and Nomenclature Notes
According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the family
Thermohalobacteraceae
is: synonym (last update, February 2025)
*
. Correct name:
Clostridiaceae
LPSN classification:
Bacteria
/
Bacillati
/
Bacillota
/
Clostridia
/
Eubacteriales
/
Clostridiaceae
The family
Thermohalobacteraceae
can also be recovered in the Genome Taxonomy Database (GTDB) as
f__Thermohalobacteraceae
(version v220)
**
.
GTDB classification:
d__Bacteria
/
p__Bacillota_A
/
c__Clostridia
/
o__Tissierellales
/
f__Thermohalobacteraceae
*
Meier‐Kolthoff
et al. (
2022
).
Nucleic Acids Res
,
50
,
D801
–
D807
; DOI:
10.1093/nar/gkab902
**
Parks
et al. (
2022
).
Nucleic Acids Res
,
50
,
D785
–
D794
; DOI:
10.1093/nar/gkab776