| Spirabiliibacterium falconis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus
Spirabiliibacterium, Spirabiliibacterium falconis Bisgaard and Christensen 2021.
Spirabiliibacterium, Spirabiliibacterium falconis Bisgaard and Christensen 2021.
Gram-negative coccobacilli. Non-motile. Non-spore-forming.
Colonies are non-haemolytic on bovine agar. After 48h growth on chocolate agar in a
candle jar at 35 ºC, pinpoint-sized, greyish colonies are observed. Enriched chocolate
agar results in enhanced growth with a colony size upto 2.5mm diameter. No pigment
production. No growth on KCN. Requires NAD (V-factor) for growth. Hemin (X-factor)
is not required for growth. No growth on MacConkey agar. Microaerophilic.
candle jar at 35 ºC, pinpoint-sized, greyish colonies are observed. Enriched chocolate
agar results in enhanced growth with a colony size upto 2.5mm diameter. No pigment
production. No growth on KCN. Requires NAD (V-factor) for growth. Hemin (X-factor)
is not required for growth. No growth on MacConkey agar. Microaerophilic.
Isolated from kestrels (Falco tinnunculus).
Isolated from bronchopneumonia in a kestrel.
- Bisgaard M, Christensen H. Classification of Bisgaard's taxa 14 and 32 and a taxon from kestrels demonstrating satellitic growth
and proposal of Spirabiliibacterium gen. nov., including the description of three species: Spirabiliibacterium mucosae sp. nov.,
Spirabiliibacterium pneumoniae sp. nov. and Spirabiliibacterium falconis sp. nov. Int J Syst Evol Microbiol 2019; 71:0.
Positive results for alkaline phosphatase, alpha- and beta-glucosidase, nitrate reduction (without gas formation), acid production
from: D(−) fructose, D(+) galactose, D(+)-glucose (without gas formation), trehalose (delayed) and D-xylose (delayed).
Negative results for arginine dihydrolase, catalase, citrate (Simmon’s), aesculin hydrolysis, beta-galactosidase (ONPG), gelatinase,
H2S production, indole production, methyl red test, lysine decarboxylase, ornithine decarboxylase, oxidase, phenylalanine
deaminase, Tween 20 and 80, urease, Voges-Proskauer test, acid production from: L(+) arabinose, D(+) arabitol, adonitol,
amygdaliln, arbutin, cellobiose, dextrin, dulcitol, aesculin, meso-erythriol, D(+) fucose, gentiobiose, glycerol, D(−) glycogen, inulin,
lactose, maltose, melibiose, melezitose,D(−) mannitol, L(+) rhamnose, raffinose, L(−) sorbose, D(−) sorbitol, sucrose, turanose,
xylitol and L(−) xylose.
Variable results for acid production from: D(−) arabinose, L(−) fucose, meso-inositol, D(+) mannose, salicin and D(−) ribose.
from: D(−) fructose, D(+) galactose, D(+)-glucose (without gas formation), trehalose (delayed) and D-xylose (delayed).
Negative results for arginine dihydrolase, catalase, citrate (Simmon’s), aesculin hydrolysis, beta-galactosidase (ONPG), gelatinase,
H2S production, indole production, methyl red test, lysine decarboxylase, ornithine decarboxylase, oxidase, phenylalanine
deaminase, Tween 20 and 80, urease, Voges-Proskauer test, acid production from: L(+) arabinose, D(+) arabitol, adonitol,
amygdaliln, arbutin, cellobiose, dextrin, dulcitol, aesculin, meso-erythriol, D(+) fucose, gentiobiose, glycerol, D(−) glycogen, inulin,
lactose, maltose, melibiose, melezitose,D(−) mannitol, L(+) rhamnose, raffinose, L(−) sorbose, D(−) sorbitol, sucrose, turanose,
xylitol and L(−) xylose.
Variable results for acid production from: D(−) arabinose, L(−) fucose, meso-inositol, D(+) mannose, salicin and D(−) ribose.
(c) Costin Stoica
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