| Morphology | Rahnella aquatilis |
| CELLULAR |
| Staining | Gram negative |
| Morphology | Small rod-shaped cells 0.5-0.7 x 2-3 um, |
| Motility | Nonmotile at 36`C; motile when grown at 25`C. |
| Specialized structures |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Rahnella aquatilis |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | |
| pH | |
| Temperature | |
| Requirements | |
| Products | Nitrate is reduced to nitrite. D-Glucose is fermented with the production of acid and, for the majority of strains, gas.. The majority of strains are methyl red-positive; all strains are Voges-Proskauer- positive. Many carbohydrates are fermented including lactose, maltose, L-rhamnose, raffinose and salicin |
| Enzymes | Negative for lysine and ornithine decarboxylases and for arginine dihydrolase. Weakly positive for phenylalanine deaminase |
| Unique features |
| ENVIRONMENTAL |
| Habitat | Occurs in fresh water. May occasionally be isolated from human clinical specimens, |
| Lifestyle | |
| Pathogenicity | but clinical significance is not known |
| Distribution |
| Genome | Rahnella aquatilis |
| G+C Mol % | 51-56 (Tm) |
| Reference | Rahnella aquatilis |
| First citation | Izard, D., F. Gavini, P.A. Trinel and H. Leclerc (1981) deoxyribonucleic acid relatedness between Enterobacter cloacae and Enterobacter amnigenus sp. nov. IJSB 31:35-42 |
| The Prokaryotes | p |
| Bergey's Systematatic | p 513 J.J. Farmer |
| Bergey's Determinative | p 185 |
| References |