| Aggregatibacter kilianii |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pasteurellales, Family Pasteurellaceae, Genus
Aggregatibacter, Aggregatibacter kilianii Murra et al. 2019.
Aggregatibacter, Aggregatibacter kilianii Murra et al. 2019.
Gram-negative, short, regular rods, 0.5 x 1.5-1.7 µm, often filamentous forms.
Non-motile.
Non-motile.
Colonies on chocolate agar incubated in air supplemented with 5 to 10% extra CO2
are highly convex, granular, yellowish, and opaque, 1.0-1.5 mm in diameter within 24
h. When incubated without extra CO2, colonies are very small and interspersed with a
few larger colonies. Growth in broth may be granular, with heavy sediment on the
bottom of the tube. Non-haemolytic. X factor and V factor are not required. Facultatively
anaerobic.
are highly convex, granular, yellowish, and opaque, 1.0-1.5 mm in diameter within 24
h. When incubated without extra CO2, colonies are very small and interspersed with a
few larger colonies. Growth in broth may be granular, with heavy sediment on the
bottom of the tube. Non-haemolytic. X factor and V factor are not required. Facultatively
anaerobic.
Isolated from human conjunctivitis, wounds, bile, abdominal abscesses, and blood.
It is a commensal of the upper respiratory tract of humans, occasionally involved in human infections.
- Murra M, Lutzen L, Barut A, Zbinden R, Lund M, Villesen P, Norskov-Lauritsen N. Whole-Genome Sequencing of Aggregatibacter
Species Isolated from Human Clinical Specimens and Description of Aggregatibacter kilianii sp. nov. J Clin Microbiol 2018; 56:
e00053-18. - Yang, D., Kim, CK., Park, J. et al. The first case of cholecytitis caused by Aggregatibacter kilianii in Korea. BMC Infect Dis 22, 497
(2022). https://doi.org/10.1186/s12879-022-07471-7
Positive results for beta-galactosidase (ONPG), proline arylamidase, phenylalanine arylamidase, acid production from glucose.
Negative results for catalase, indole production, ornithine decarboxylase, urease, acid production from: maltotriose, mannose, ribose
and xylose.
Variable results for acid production from: galactose, maltose, N-acetylglucosamine and sucrose.
Negative results for catalase, indole production, ornithine decarboxylase, urease, acid production from: maltotriose, mannose, ribose
and xylose.
Variable results for acid production from: galactose, maltose, N-acetylglucosamine and sucrose.
(c) Costin Stoica
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