TABLE 2.
Variable phenotypic characteristics of P. multocida and taxon 45 of Bisgaard
| Characteristic | Result fora:
|
|||||
|---|---|---|---|---|---|---|
| P. multocida subsp. multocida NCTC10322T | P. multocida subsp. gallicida NCTC10204T | P. multocida subsp. septica NCTC11995T | P. multocida subsp. septica (eight atypical strainsb) | P. multocida subsp. multocida (four sucrose-negative strains) | Taxon 45 of Bisgaard (seven strains) | |
| Oxidase | + | + | + | d (4)c | d (1) | + |
| Ornithine decarboxylase | + | + | + | d (4) | d (2) | + |
| Indole | + | + | + | d (2) | d (2) | + |
| Glycerol | − | − | + | − | − | d (6) |
| (+)-l-Arabinose | − | + | − | − | − | − |
| (−)-d-Arabinose | − | − | (+) | − | − | − |
| (+)-d-Xylose | (+) | − | + | d (3) | − | d (5) |
| Dulcitol | −d | + | − | − | − | d (3) |
| (−)-d-Mannitol | (+) | + | + | d (2) | d (2) | − |
| (−)-d-Sorbitol | (+) | + | − | − | +/(+) | + |
| (−)-l-Fucose | − | − | (+) | − | d (1) | − |
| Gas from (+)-d-glucose | − | − | − | − | − | d (3) |
| Lactose | − | − | − | d (1) | − | − |
| ONPGe | − | − | − | d (1) | − | − |
| Sucrose | + | + | + | d (4) | − | − |
| Trehalose | + | − | + | + | + | − |
| PNPGf | + | − | + | + | + | d (1) |
a
+, positive within 1 to 2 days; (+), positive within 3 to 14 days; −, negative after 14 days; d, variable.
b
Including four reference strains (Table 1).
c
The number of positive strains is given in parentheses.
d
Key characteristics used for separation of taxa are in boldface.
e
ONPG, β-galactosidase test performed with o-nitro-phenyl-d-galactopyranoside.
f
PNPG, α-glucosidase test determined with 4-nitrophenyl-α-d-glucopyranoside.