| Erwinia tracheiphila |
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Legend: + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains
Differential characters:
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Enterobacterales, Family Erwiniaceae, Genus Erwinia,
Erwinia tracheiphila (Smith 1895) Bergey et al. 1923 emend. Hauben et al. 1998.
Old synonyms: Bacillus tracheiphilus Smith 1895, Bacterium tracheiphilus, Erwinia amylovora var. tracheiphila.
Erwinia tracheiphila (Smith 1895) Bergey et al. 1923 emend. Hauben et al. 1998.
Old synonyms: Bacillus tracheiphilus Smith 1895, Bacterium tracheiphilus, Erwinia amylovora var. tracheiphila.
Gram negative, straight bacilli. Motile by peritrichous flagella. Non-spore-forming.
Facultatively anaerobic. Optimum growth temperature 26-30 ºC. Normally grow at
temperatures below 36 ºC. Grows very poorly on nutrient agar but moderately well
on yeast extract glucose chalk agar (YCC) (10 g glucose, 5 g yeast extract, 30 g
CaCO3, 1.5% agar, 1 l distilled water) or glucose nutrient agar. No growth in 5% NaCl
or in KCN broth.
temperatures below 36 ºC. Grows very poorly on nutrient agar but moderately well
on yeast extract glucose chalk agar (YCC) (10 g glucose, 5 g yeast extract, 30 g
CaCO3, 1.5% agar, 1 l distilled water) or glucose nutrient agar. No growth in 5% NaCl
or in KCN broth.
Isolated from Cucurbita species, Cirullus lanatus, and Cucumis melo. Overwinters in the bodies of cucumber beetles (Diabrotica
vittata Fabr. and D. duodecimpunctata Oliv.).
vittata Fabr. and D. duodecimpunctata Oliv.).
Causes bacterial wilt of cucurbits (muskmelon, squash, and pumpkin). Watermelon seems to be resistant.
- J. G. Holt et al., 1994. Facultatively Anaerobic Gram-Negative Rods. Subgroup 1. Family Enterobacteriaceae. In: Begey’s Manual of
Determinative Bacteriology, 9th-edition, Williams & Wilkins, pp 175-189. - Don J. Brenner and J.J. Farmer III, 2001. Family I. Enterobacteriaceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition, Vol two, part B, George M. Garrity (Editor-in-Chief), pp 587-897. - Skerman (V.B.D.), McGowan (V.) and Sneath (P.H.A.) (editors): Approved Lists of Bacterial Names Int. J. Syst. Bacteriol., 1980, 30,
225-420.
Positive results for catalase, H2S production from cysteine, acid production from amygdalin, glucose, and N-acetylglucosamine.
Negative results for arginine dihydrolase, caseinase, indole production, gelatinase, nitrate reduction, oxidase, pectinase,
phenylalanine deaminase, starch hydrolysis, urease, acid production from D-cellobiose, dulcitol, esculin, gentiobiose, myo-inositol,
inulin, lactose, maltose, melezitose, melibiose, raffinose, D-ribose, salicin, starch, trehalose and D-xylose.
Variable results for Voges-Proskauer test, acid production from glycerol, alpha-methylglucoside, mannose, and L-rhamnose.
Negative results for arginine dihydrolase, caseinase, indole production, gelatinase, nitrate reduction, oxidase, pectinase,
phenylalanine deaminase, starch hydrolysis, urease, acid production from D-cellobiose, dulcitol, esculin, gentiobiose, myo-inositol,
inulin, lactose, maltose, melezitose, melibiose, raffinose, D-ribose, salicin, starch, trehalose and D-xylose.
Variable results for Voges-Proskauer test, acid production from glycerol, alpha-methylglucoside, mannose, and L-rhamnose.
(c) Costin Stoica
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