Abstract
Me.tha.no.bre.vi.bac'ter. M.L. neut. n.
methanum
methane; L. masc. adj.
brevis
short; M.L. masc. n.
bacter
equivalent of Gr. neut. n.
bakterion
rod, staff; M.L. masc. n.
Methanobrevibacter
short methane (‐producing) rod.
Oval rods or cocci to short rods
, usually occurring in pairs or chains; about 0.5–0.7 µm in width and 0.8–1.4 µm in length. Rarely, filaments are formed. Nonsporing, Gram‐positive.
Cell walls are composed of pseudomurein
. Nonmotile. Strict anaerobes. Optimum temperature, 37–40°C; maximum, ~45°C; minimum, ~30°C.
The mol
%
G
+
C of the DNA is
: 27.5–31.6.
Type species
:
Methanobrevibacter ruminantium
(Smith and Hungate 1958) Balch and Wolfe 1981, 216 (Effective publication: Balch and Wolfe
in
Balch, Fox, Magrum, Woese and Wolfe, 1979, 284) (
Methanobacterium ruminantium
Smith and Hungate 1958, 717).
Taxonomic and Nomenclature Notes
According to the List of Prokaryotic names with Standing in Nomenclature (LPSN), the taxonomic status of the genus
Methanobrevibacter
is: correct name (last update, February 2025)
*
.
LPSN classification:
Archaea
/
Methanobacteriati
/
Methanobacteriota
/
Methanobacteria
/
Methanobacteriales
/
Methanobacteriaceae
/
Methanobrevibacter
The genus
Methanobrevibacter
can also be recovered in the Genome Taxonomy Database (GTDB) as
g__Methanobrevibacter
(version v220)
**
.
GTDB classification:
d__Archaea
/
p__Methanobacteriota
/
c__Methanobacteria
/
o__Methanobacteriales
/
f__Methanobacteriaceae
/
g__Methanobrevibacter
*
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