Hydrogen consumers Acetitomaculum ruminis
Methanobrevibacter bryantii Methanosarcina barkeri Wolinella succinogenes
Other nutritional specialists Acidaminococcus fermentans Anaerovibrio lipolytica Oxalobacter formigenes Succiniclasticum ruminis Synergistes jonesii Veillonella parvulae
fumarate + H2, formate, or H2S
CH4 CH4 Suc
Probably not an important H2 consumer in the rumen Produces H2 from EtOH and Lac in presence of methanogens Autotrophic
Autotrophic, methylotrophic Can also reduce inorganic nitro compounds (e.g.,
Detoxifies TAA Detoxifies oxalate Detoxifies mimosine
"AA, amino acids; Arg, arginine; Cd, cellodextrins (except where indicated, glucose also fermented); DHP, 2,3- and 3,4-dihydroxypyridinediols; EtOH, ethanol; F, fructose; For, formate; G, glucose; G2, cellobiose; Glu, glutamate; Gol, glycerol; His, histidine; Hx, most common hexose sugars; L, lactose; Lac, lactate; MeOH, methanol; P, pectin; Pep, peptides; Prot, protein; TG, triglycerides; X, xylose; Xd, xylodextrins; Xn, xylan. b Ac, acetate; BCVFAs, branch-chain volatile fatty acids (isobutyrate, isovalerate, 2-methylbutyrate); But, butyrate; EtOH, ethanol; For, formate; Lac, lactate; Pro, propionate; Suc, succinate.
c Includes C. cellobioparum, C. chartatabidium, C. lochheadii, C. longisporum, C. polysaccharolyticum. A few of these species also produce ethanol. d Stain gram negative but phylogenetically related to gram positive eubacteria. e Abundant in ovine rumen but not bovine rumen.
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