Table 5.

Phenotypic characteristics of members of the genus Serratia a

CharacteristicS. marcescensS. liquefaciensS. grimesiiS. proteamaculansS. quinivoransS. ficariaS. fonticolaS. rubidaeaS. odoriferaS. plymuthicaS. entomophilaS. glossinaeS. nematodiphilaS. ureilytica
DNase++++++++++ND+ND
Gelatinase+++++++++++ND
Lipase (Tween 80 hydrolysis)++++++++++ND++
Lipase (corn oil hydrolysis)+++++++++++NDNDND
Prodigiosin productionVVV+
Potato odor+V+
IndoleV
Urease++
Arginine dihydrolase+++
Lysine decarboxylase++++++V++++
Ornithine decarboxylase++++++V b +++
l-Arabinose fermentation+++++++++++
d-Dulcitol fermentation+NDNDND
Lactose fermentationV+VVV++++ND+
d-Sorbitol fermentation+++VV+++V+++
Sucrose fermentation++++++V+V b ++++
  • a Characteristics were compiled from several references (36, 128, 146, 159, 425). ND, not determined; V, variable reaction.

  • b S. odorifera biotype 1 is ornithine decarboxylase positive and ferments sucrose, while biotype 2 is ornithine decarboxylase negative and does not ferment sucrose.