| Morphology | Erwinia |
| CELLULAR |
| Staining | Gram-negative |
| Morphology | Straight rods, 0.5-1.0 x 1.0-3.0 um; occur singly, in pairs and sometimes in short chains.. |
| Motility | Motile (one exception) by peritrichous flagella. |
| Specialized structures |
| Division |
| COLONIAL |
| Solid surface |
| Liquid |
| Growth Parameters | Erwinia |
| PHYSIOLOGICAL |
| Tropism | |
| Oxygen | Facultatively anaerobic, but anaerobic growth by some species is weak |
| pH | |
| Temperature | . Optimum temperature, 27-30`C; maximum varies between 32`C and at least 40`C. |
| Requirements | |
| Products | Acid is produced from fructose, galactose, D-glucose, B-metylglucoside and sucrose. Utilize acetate, fumarate, gluconate, malate and succinate, but not benzoate, oxalate, or propionate as carbon- and energy-yielding sources |
| Enzymes | Oxidase-negative. Catalase-positive |
| Unique features |
| ENVIRONMENTAL |
| Habitat | Associated with plants as pathogens, saprophytes, or as constituents of the epiphytic flora. At least one species has also been isolated from human and animal hosts. |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Erwinia |
| G+C Mol % | 50-58 (Tm, Bd). |
| Reference | Erwinia |
| First citation | Winslow,C.-E.A., J. Broadhurst, R.E.Buchanan, C.Krumwiede Jr., L.A.Rogers and G.H. Smith (1920)The families and genera of the bacteria. Final report of the Committee of the Society of American Bacteriologists on characterization and classification of bacterial types. J. Bacteriol 5:191-229 |
| The Prokaryotes | P |
| Bergey's Systematatic | p 469 R.A. Lelliott and R. S. Dickey |
| Bergey's Determinative | p 179 |
| References |