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ErwiniaRANK: GenusTAXONOMY: cellular organisms -> Bacteria -> Proteobacteria -> Gammaproteobacteria -> Enterobacteriales -> Enterobacteriaceae -> Erwinia OVERVIEW: Straight rods, 0.5–1.0 × 1.0–3.0 µm; occur singly or in pairs. Gram negative. Motile by peritrichous flagella. Facultatively anaerobic, but anaerobic growth by some species is weak. Optimum temperature, 27–30°C; maximum temperature for growth is 40°C. Oxidase negative. Catalase positive. Pectinase negative. Acid is produced from fructose, d-galactose, d-glucose, and sucrose but not from adonitol, arabitol, dextrin, dulcitol, inulin, maltose, starch, and tagatose. Utilize fumarate, d-galactose, gluconate, d-glucose, glycerol, β-methylglucoside, malate, and succinate, but not l-arabitol, benzoate, butanol, methanol, oxalate, propionate, or sorbose as carbon- and energy-yielding sources. Utilize l-alanine, l-glutaminic acid, glycylglycine, and l-serine, but not kynureninic acid and trigonelline, as nitrogen sources. Sensitive to chloramphenicol, furazolidone, nalidixinic acid, oxytetracyline, and tetracycline. Do not possess arginine dihydrolase, caseinase, pectinase, phenylalanine deaminase, or urease. Associated with plants as pathogens, saprophytes, or constituents of the epiphytic flora.The mol% G + C of the DNA is: 49.8–54.1.Type species: Erwinia amylovora |