Colonies on R2A agar after 48 h incubation at 25 ºC are round, entire, convex and
ivory-coloured, 0.8-1.2 mm in diameter. Aerobic. Growth occurs at 15-37 ºC (optimum
25-30 ºC), at pH 6.0-8.0 (optimum pH 7.0) and in 0-2% NaCl (optimum 0% NaCl).
Phylum Proteobacteria, Class Betaproteobacteria, Order Neisseriales, Family Chromobacteriaceae, Genus Deefgea, Deefgea
chitinilytica Chen et al. 2010.
Gram-negative rods, 0.7-0.9 x 1.7-3.2 μm. Motile by one polar flagellum. Poly-beta-
hydroxybutyrate accumulation is observed.
Isolated from a water sample of Niao-Song Wetland Park in Taiwan. Resistant to ampicillin and penicillin G.
Sensitive to ceftizoxime, gentamicin, kanamycin, nalidixic acid, streptomycin, sulfamethoxazole, tetracycline, chloramphenicol,
erythromycin, rifampicin and novobiocin.
- Chen W.M., Chung Y.N., Chiu T.F., Cheng C.Y., Arun A.B. and Sheu S.Y.: Deefgea chitinilytica sp. nov., isolated from a wetland. Int.
J. Syst. Evol. Microbiol., 2010, 60, 1450-1453.
- Euzeby (J.P.): List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int. J. Syst. Bacteriol.,
1997, 47, 590-592. (List of Prokaryotic names with Standing in Nomenclature. http://www.bacterio.net).
Most results are based on API Biomerieux and Biolog GN2 tests.
Positive results for acetoin production, acid and alkaline phosphatase, catalase, DNase, chitin hydrolysis, leucine arylamidase, nitrate
reduction, oxidase, skimmed milk hydrolysis, tryptophan deaminase, trypsin, acid production from glucose.
Can utilize (API 20 NE and API 50 CH): D-glucose, D-mannose, Nacetylglucosamine & D-gluconate, D-ribose, D-glucose, D-fructose,
D-mannose, N-acetyl-D-glucosamine, salicin, cellobiose, maltose, glycogen, D-fucose, D-arabitol, potassium gluconate & potassium
Oxidize (Biolog GN2): dextrin, N-acetyl-D-glucosamine, cellobiose, D-fructose, alpha-D-glucose, maltose, D-mannose & methylpyruvate.
Negative results for agar hydrolysis, lipase (corn oil), starch hydrolysis, Tweens 20, 40, 60 and 80 hydrolysis, urease & acid production
(c) Costin Stoica