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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology
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Species/Subspecies: Serratia marcescens subsp. marcescens
Etymology: Genus name: named after the Italian physicist Serafino Serrati
Species epithet: to decay
Significance:  [Of minor importance]   
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Enterobacteriales
Family
Enterobacteriaceae 
Genus
Serratia
Type Strain: ATCC 13880 = CCUG 1647 = NCTC 10211.
Macromorphology (smell): Forms opaque colonies, which can be pigmented (pink to red) or non-pigmented.
Micromorphology: Motile rods (0,5-0,8 x 0,9-2,0 µm) with peritrichous flagella
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/-
Other Enzymes: Citrate +, DNase +, tryptophanase -
Biochemical Tests: Esculinase +, methyl red +, Voges-Proskauer +
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
+?+-?
L-arabinosecellobioseD-mannitolsalicintrehalose
--+?+
glycerolinulinraffinoseD-sorbitolstarch
???+?
Can also ferment xylitol.
Spec. Char.:
Hosts: Cattle, chickens, man etc.
Disease:Opportunist, which can sometimes cause bovine mastitis and septicaemia in chickens (rare). Nosocomial infections in man.
Clinical Picture:
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AJ233431 (T) 1505  

Taxonomy/phylogeny:
Serratia marcescens  
About 20 species have been described within genus Serratia, but it is almost only S. marcescens, which is pathogenic.
Updated:2018-03-29

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