Legend: + positive 90-100%, - negative 90-100%, [+] positive 75-89%, [-] negative 75-89%, d positive 25-74% of strains, nd - not determined,
ADH - arginine dihydrolase, LDC -lysine decarboxylase, ODC - ornithine decarboxylase, * S glossinae is not included in ABIS database
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacteroidota, Class Gammaproteobacteria, Order Enterobacterales, Family Yersiniaceae, Genus Serratia, Serratia liquefaciens
(Grimes and Hennerty 1931) Bascomb et al. 1971.
Basonym: Aerobacter liquefaciens Grimes and Hennerty 1931.
Gram-negative, straight rods, 0.5-0.8 x 0.9-2.0 μm, non-sporulated. Some strains are
capsulated. Motile by peritrichous flagella.
Colonies are 1 to 3 mm in diameter, circular, shiny, opaque, cream-white and smooth
with an entire margin. Prodigiosin is not produced. Facultatively anaerobic, growth
temperature 20-35 ºC (range may vary from 10 to 40 ºC). For S. plymuthica many tests
that are positive at 28-35 ºC give negative results at 37 ºC. Doesn't require growth
factors.
Isolated environment (plants, digestive tract of rodents).
Occasionally encountered as an opportunistic pathogen.
- 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.
- Grimont P.A.D., Grimont F. & Irino K.: Biochemical characterization of Serratia liquefaciens sensu stricto, Serratia proteamaculans,
and Serratia grimesii sp. nov. Curr. Microbiol., 1982, 7, 69-74.
- Bascomb S., Lapage S.P., Willcox W.R. & Curtis M.A.: Numerical classification of the tribe Klebsielleae. Journal of General
Microbiology, 1971, 66, 279-295.
- Grimont P.A.D., Grimont F. & Starr M.P.: Serratia proteamaculans (Paine and Stansfield) comb. nov., a senior heterotypic synonym
of Serratia liquefaciens (Grimes and Hennerty) Bascomb et al. Int. J. Syst. Bacteriol., 1978, 28, 503-510.
- 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.
- Adeolu M, Alnajar S, Naushad S, S Gupta R. Genome-based phylogeny and taxonomy of the 'Enterobacteriales': proposal for
Enterobacterales ord. nov. divided into the families Enterobacteriaceae, Erwiniaceae fam. nov., Pectobacteriaceae fam. nov.,
Yersiniaceae fam. nov., Hafniaceae fam. nov., Morganellaceae fam. nov., and Budviciaceae fam. nov. Int J Syst Evol Microbiol
2016; 66:5575-5599.
(c) Costin Stoica
Differential characters between species:
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S. grimesii
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S. liquefaciens
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S. marcescens
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S. nematodiphila
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S. odorifera 1
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S. odorifera 2
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S. plymuthica
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S. proteamaculans
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S. rubidaea
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Positive results for catalase, ONPG, esculin hydrolysis, citrate utilization, acid production from fructose, glucose, mannitol, glycerol,
maltose, D-mannose, ribose, salicin and trehalose.
Negative results for oxidase, indole production, H2S production, phenylalanine deaminase and acid production from mucate