Bordetella trematum
| Bordetella trematum | |
|---|---|
| Scientific classification | |
| Domain: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Betaproteobacteria |
| Order: | Burkholderiales |
| Family: | Alcaligenaceae |
| Genus: | Bordetella |
| Species: | B. trematum |
| Binomial name | |
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Bordetella trematum Vandamme et al. 1996 |
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| Strains | |
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Bordetella trematum is a species of Gram-negative bacteria identified in 1996 by comparison of 10 strains of B. trematum against other well characterized Bordetella and Alcaligenes species. The term trema refers to something pierced or penetrated, or to a gap. "Trematum" pertains to open things, and refers to the presence of bacteria in wounds and other exposed parts of the body. Strain LMG 13506T is the reference strain for this species.
Bordetella species typically infect the respiratory tracts of humans, but B. trematum has never been isolated from a human or animal respiratory tract. It has been isolated from human ear infection and limb wounds. Below is a list of known B. trematum strains, alternative strain designation, and the date and source where they were first isolated:
Bordetella trematum is a Gram-negative, capsulated, nonspore-forming, rod about 0.5 μm wide and 1.0-1.8 μm long, but rods as long as 2.4 μm have been observed. It grows aerobically at temperatures ranging from 25-42 °C, with optimal temperature for growth ranging from 35-37 °C. Microaerobic growth may be observed at optimal temperatures. It is motile via peritrichous flagella.B. trematum is catalase positive. It is unique in being oxidase negative, since all other species of Bordetella are oxidase positive.
Bordetella trematum may be cultured on horse blood agar, MacConkey agar, and Bordet-Gengou agar. When grown on Bordet-Gengou agar, which is the standard agar for Bordetella isolation, colonies are convex, pearly, smooth, almost transparent, and glistening, and are surrounded by a zone of hemolysis. When grown on blood agar, colonies are grayish cream to white, circular, and convex.
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