Table 4

Biochemical differentiation of Cronobacter from other Enterobacteriaceae.

4-NP-α-Glc

VP

ADH

ODC

SAC

RAF

CEL

ARA

CIT

MR

ADO

SOR

LDC

H2S


Cronobacter spp.

+

+

+

+

+

+

+

+

+

-

-

-

-

-

Buttiauxella agrestis

v

-

-

+

-

+

+

+

+

+

-

-

-

-

Citrobacter koseri

-

-

v

+

v

-

+

+

+

+

+

+

-

-

Citrobacter freundii

-

-

v

-

v

v

v

+

v

+

-

+

-

+

Edwardsiella tarda

-

-

-

+

-

-

-

-

-

+

-

-

+

+

Enterobacter aerogenes

-

+

-

+

+

+

+

+

+

-

+

+

+

-

Enterobacter asburiae

-

-

v

+

+

v

+

+

+

+

-

+

-

-

Enterobacter cancerogenus

-

+

+

+

-

-

+

+

+

-

-

-

-

-

Enterobacter cloacae

-

+

+

+

+

+

+

+

+

-

v

+

-

-

Enterobacter gergoviae

-

+

-

+

+

+

+

+

+

-

-

-

+

-

Enterobacter hormaechei

-

+

v

+

+

-

+

+

+

v

-

-

-

-

Enterobacter pyrinus

v

v

-

+

+

-

+

+

-

v

-

-

+

-

Enterobacter helveticus*

+

-

-

-

-

-

+

+

-

+

-

-

-

-

Enterobacter turicensis*

+

-

-

-

-

-

+

+

-

+

-

-

-

-

Escherichia coli

-

-

v

v

v

v

-

+

-

+

-

+

(+)

-

Hafnia alvei

(-)

(+)

-

+

-

-

(-)

+

-

v

-

-

+

-

Klebsiella pneumoniae

(-)

+

-

-

+

+

+

+

+

-

+

+

+

-

Kluyvera spp.

v

-

-

+

+

+

+

+

(+)

+

-

v

v

-

Leclercia adecarboxylata

-

-

-

-

v

v

+

+

-

+

+

-

-

-

Morganella morganii

-

-

-

+

-

-

-

-

-

+

-

-

-

(-)

Pantoea spp.

-

v

-

-

v

v

v

+

v

v

-

v

-

-

Proteus vulgaris

+

-

-

v

(+)

-

-

-

v

v

-

-

-

+

Providencia spp.

-

-

-

-

v

-

-

-

v

+

v

-

-

v

Rahnella aquatilis

-

-

v

-

+

+

+

+

(-)

-

-

+

-

-

Raoultella terrigena

-

+

-

(-)

+

+

+

+

v

v

+

+

+

-

Salmonella sv.

-

-

v

(+)

-

-

v

(+)

v

+

-

v

(+)

v

Serratia marcescens

v

+

-

+

+

-

-

-

+

(-)

v

+

+

-

Yersinia enterocolitica

-

-

-

+

+

-

v

+

-

+

-

+

-

-


4-NP-α-Glc, metabolism of 4-NP-α-glucoside; VP, Voges-Proskauer; ADH, arginine dihydrolase; ODC, ornithine decarboxylase; SAC, acid from sucrose; RAF, acid from raffinose; CEL, acid from cellobiose; ARA, acid from arabinose; CIT, use of citrate as sole carbon source (Simmon's); ADO, acid from adonitol; SOR, acid from sorbitol; LDC, lysine decarboxylase; MR, methly red test; H2S, production of hydrogen sulphide. +, 90–100% positive; (+), 80–90% positive; v, 20–80% positive; (-), 10–20% positive; -, less than 10% positive. Data was derived from this study and from Manual of Clinical Microbiology, 7th Edition [25]. *Enterobacter helveticus and E. turicensis are novel Enterobacter species [38].

Iversen et al. BMC Evolutionary Biology 2007 7:64   doi:10.1186/1471-2148-7-64

Open Data