Methanobacterium
SuperSet Prokaryote, Archaea, Methanogens Methanogens subgroup 1:
Compare

Methanogens subgroup 1: Methanobacterium ,Methanobrevibacter, Methanosphaera ,Metthanothermus

Methanogens Subgroup 2 : Methanococcus ,Methanocorpusculum , Methanoculleus , Methanogenium Methanolacinia paynteri, Methanomicrobium mobile , Methanoplanus , Methanospirillum hungatei

Methanogens subgroup 3: Methanococcoides methylutens , Methanohalobium evstigatus , Methanohalophilus , Methanolobus , Methanosarcina , Methanothrix

Contrast Methanogens
Cell Wall-Less Archaeobacteria
Sulfate Reducing Archaeobacteria
Halophilic Archaeobacteria
Extremely Thermophilic Archaeobacteria

Eubacteria
Subset  

 

Morphology Methanobacterium
CELLULAR  
Staining Gram stain results are variable
Morphology Curved, crooked to straight rods, long to filamentous, about 0.5- 1.0 um in width.
Motility Nonmotile.
Specialized structures Endospores not formed.. Cells produce fimbriae
Division  
COLONIAL  
Solid surface  
Liquid  

 

Growth Parameters Methanobacterium
PHYSIOLOGICAL  
Tropism  
Oxygen Very strictly anaerobic
pH  
Temperature Optimum growth temperatures are 37-45`C for mesophilic species and 55`C or greater for thermophiles.
Requires Ammonia is the sole nitrogen source, and sulfide may serve as sulfur source.
Products  
Enzymes  
Unique features Energy metabolism by reduction of CO2 to CH4 electron donors are limited to H2, formate and CO (Kluyver and Schnellen 1947).
ENVIRONMENTAL  
Habitat  
Lifestyle  
Pathogenicity  
Distribution  

 

Genome Methanobacterium
G+C Mol % 32-61
   

 

Reference Methanobacterium
First citation Kluyver,A.J. and C.B. Van Niel. 1936. Prospects for a natural system of classification of bacteria. Zentrlbl. Bacteriol. Parasitenkd. Infektionskr. Hyg. Abt II 94: 369-403
Emended Balch and Wolfe in Balch, W.E., C.E. Fox, L.J. Magrum, C. R. Woese and R.S. Wolfe. 1979 Methanogens: reevaluation of a unique biological group. Microbiol. Rev. 43: 260-296
The Prokaryotes  
Bergey's Systematatic p 2175 D.R. Boone and R. A. Mah
Bergey's Determinative p 720
References