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.
Euryarchaeota / Methanobacteria / Methanobacteriales / Methanobacteriaceae / Methanobrevibacter
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).