Klebsiella electrica
| Klebsiella electrica | |
|---|---|
| |
| Species R. planticola from the same genus | |
Scientific classification 
| |
| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Phylum: | Pseudomonadota |
| Class: | Gammaproteobacteria |
| Order: | Enterobacterales |
| Family: | Enterobacteriaceae |
| Genus: | Klebsiella |
| Species: | K. electrica
|
| Binomial name | |
| Klebsiella electrica (Kimura et al. 2014) Ma et al. 2022[1]
| |
| Synonyms | |
|
Raoultella electrica Kimura et al. 2014 | |
Klebsiella electrica is a Gram-negative, non-spore-forming, rod-shaped bacterium of the genus Klebsiella. It was formerly known as Raoultella electrica before being reclassified in 2022 based on phylogenomic evidence.[1] The type strain of K. electrica was isolated from anodic biofilms of a microbial fuel cell fed with glucose.[2]
Type strain
[edit]The type strain of Klebsiella electrica, 1GB, is a facultative anaerobic and chemo-organotrophic bacterium capable of both respiratory and fermentative metabolism. It can utilize a wide variety of sugars as carbon and energy sources.[2]
Description
[edit]K. electrica cells are Gram-negative, non-spore-forming, rod-shaped, facultative anaerobic, and non-motile. Their width is approximately 0.3–0.4 μm, and their length ranges from 3.0 to 6.0 μm. They grow optimally at 37 °C and are also capable of growth at 41 °C. Unlike Klebsiella pneumoniae, K. electrica strains can grow at 10 °C but not at 5 °C.[2] These bacteria are Voges–Proskauer positive. Their ability to produce histamine has not been confirmed.[3]
Taxonomy
[edit]Klebsiella electrica was originally described as Raoultella electrica in 2014.[2] In 2021, a phylogenomic study by Ma et al. demonstrated that species of the genus Raoultella were nested within the genus Klebsiella, sharing a monophyletic lineage, high average amino acid identity (AAI), and conserved signature indels. Based on this evidence, the authors proposed the reunification of the two genera.[1] The corrigendum in 2022 formalized the taxonomic reclassification of R. electrica as Klebsiella electrica comb. nov.
The species epithet electrica (from Latin electrum, “amber”) refers to the electricity-generating microbial environment from which it was isolated—anodic biofilms of a microbial fuel cell in Sapporo, Japan.[2][4]
Pathogenicity
[edit]The pathogenic potential of K. electrica is currently unknown.[3] However, the bacterium was isolated from chicken eggs in Jaipur, India, displaying a multidrug resistance profile.[5]
References
[edit]- ^ a b c Ma, Yuanyuan; Wu, Xiuqin; Li, Shuying; Tang, Lie; Chen, Mingyue; An, Qianli (2022). "Corrigendum to "Proposal for reunification of the genus Raoultella with the genus Klebsiella and reclassification of Raoultella electrica as Klebsiella electrica comb. nov."". Research in Microbiology. 173 (6–7): 103924. doi:10.1016/j.resmic.2022.103924. PMID 35816932.
- ^ a b c d e Kimura, Z. I.; Chung, K. M.; Itoh, H.; Hiraishi, A.; Okabe, S. (April 2014). "Raoultella electrica sp. nov., isolated from anodic biofilms of a glucose-fed microbial fuel cell". International Journal of Systematic and Evolutionary Microbiology. 64 (Pt 4). Microbiology Society: 1384–1388. doi:10.1099/ijs.0.058826-0. PMID 24449794.
- ^ a b Appel, Tobias M.; Quijano-Martínez, Natalia; De La Cadena, Elsa; Mojica, María F.; Villegas, María Virginia (2021). "Microbiological and Clinical Aspects of Raoultella spp". Frontiers in Public Health. 9: 686789. Bibcode:2021FrPH....986789A. doi:10.3389/fpubh.2021.686789. PMC 8365188. PMID 34409007.
- ^ "NBRC 109676: Raoultella electrica Kimura et al. 2014". NBRC Culture Collection. 2013.
- ^ Jain, A. K.; Yadav, R. (2018). "First report of isolation and antibiotic susceptibility pattern of Raoultella electrica from table eggs in Jaipur, India". New Microbes and New Infections. 21: 95–99. doi:10.1016/j.nmni.2017.11.004. PMC 5773470. PMID 29379605.