Definition
Kerstersia similis is a species of Gram‑negative bacteria classified within the genus Kerstersia, family Alcaligenaceae.
Overview
The species was described as part of the taxonomic revision of the genus Kerstersia, which comprises non‑fermentative, oxidase‑positive rods often isolated from clinical or environmental samples. K. similis has been reported in limited microbiological studies, primarily involving human clinical isolates, but comprehensive data on its distribution, pathogenic potential, and ecological niche are sparse.
Etymology / Origin
The genus name Kerstersia honors Belgian microbiologist Herman Kersters for his contributions to bacterial systematics. The specific epithet similis is Latin for “similar,” likely referring to phenotypic or genetic resemblance to other Kerstersia species, particularly the type species K. gyllenbergii.
Characteristics
- Cell morphology: Short rod‑shaped, Gram‑negative bacteria.
- Metabolism: Non‑fermentative, oxidase‑positive, catalase‑positive; utilizes a limited range of organic substrates (exact profile not fully documented).
- Growth conditions: Aerobic growth on standard bacteriological media; optimal temperature reported around 30–37 °C.
- Phylogeny: 16S rRNA gene sequencing places K. similis within the Kerstersia clade, showing close similarity to K. gyllenbergii; precise phylogenetic distance values are not publicly available.
- Clinical relevance: Isolated occasionally from respiratory or wound specimens; there is no definitive evidence linking K. similis to specific disease processes.
- Antibiotic susceptibility: Data are limited; reported susceptibility patterns resemble those of related Alcaligenaceae members, but confirmatory studies are lacking.
Related Topics
- Kerstersia (genus) – Overview of the genus, including taxonomy and known species.
- Alcaligenaceae – The bacterial family encompassing Kerstersia and related genera.
- Non‑fermentative Gram‑negative bacilli – A broader group of clinically relevant bacteria sharing similar metabolic traits.
- Clinical microbiology of opportunistic pathogens – Context for interpreting occasional isolates of uncommon species such as K. similis.
Accurate information is not confirmed for several aspects of Kerstersia similis, including its full phenotypic profile, ecological distribution, and clinical significance, due to the limited number of published studies.