| Natronobacterium |
| SuperSet | Prokaryote, Archaea, Halophilic Archaeobacteria |
| Compare | Haloarcula , Halobacterium, Halococcus , Haloferax ,Natronobacterium , Natronococcus occultus Eubacteria: Halomonas |
| Contrast | Methanogens Cell Wall-Less Archaeobacteria Sulfate Reducing Archaeobacteria Halophilic Archaeobacteria Extremely Thermophilic Archaeobacteria |
| Subset |
| Morphology | Natronobacterium |
| CELLULAR |
| Staining | Gram- negative |
| Morphology | Rods in liquid culture in the exponential phase of growth, usually 0.5-1.0 x 2-15 um |
| Motility | Some strains motile by a tuft of polar flagella. |
| Specialized structures | Resting stages are now known |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Natronobacterium |
| PHYSIOLOGICAL |
| Tropism | Chemoorganotrophic. |
| Oxygen | Strictly aerobic. Oxidase and catalase-positive |
| pH | Alkaliphilic with growth occurring at pH 8.5-11.0; optimum growth occurs at about pH 9.5 at 37`C in media containing 3.5 M NaCl. |
| Temperature | Optimum temperature:
35-40`C; maximum: about 50`C; minimum: 20-25`C |
| Requires | Extremely halophilic with growth occurring in media containing 2-5.5 M (saturation) NaCl; optimum concentration: 3.5 M |
| Products | |
| Enzymes | |
| Unique features | Contains no glycolipids |
| ENVIRONMENTAL |
| Habitat | |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Natronobacterium |
| G+C Mol % | major component 61.2-64.6
(Bd) minor component 49.7-51.9 (Bd) |
| The DNA is sometimes composed of a major component and a minor component. The latter makes up 10-30% of the total DNA (Bd). Strains that have a minor component usually harbour a large plasmid (about 144 kb). |
| Reference | Natronobacterium |
| First citation | Tindall, B.J., H.N.M. Ross and W. D. Grant. 1984. Natronobacterium gen. nov. and Natronococcus gen. nov., two new genera of haloalkaliphilic arachaebacteria. Syst. Appl. Microbiol 5: 41-57 |
| The Prokaryotes | |
| Bergey's Systematatic | p 2230 Wm D. Grant |
| Bergey's Determinative | p 743 |
| References |