Raoultella electrica

Raoultella electrica is a Gram-negative, non-spore-forming, rod-shaped bacterium of the genus Raoultella.[1][3][4] The type strain of R. electrica was isolated from anodic biofilms of a microbial fuel cell fed with glucose.[1]

Raoultella electrica
Species R. planticola from the same genus
Scientific classification
Domain:
Bacteria
Phylum:
Pseudomonadota
Class:
Gammaproteobacteria
Order:
Enterobacterales
Family:
Enterobacteriaceae
Genus:
Raoultella
Species:
R. electrica
Binomial name
Raoultella electrica
Kimura et al. 2014[1]
Synonyms

Klebsiella electrica Ma et al. 2021, not validly published[2]

Type strains

The type-strain of Raoultella electrica, 1GB is a facultative anaerobic and chemo-organotrophic bacterium, able to have both a respiratory and a fermentative type of metabolism. It is also able to use a wide variety of sugars as carbon and energy source.[1]

Description

Bacteria from R. electrica species are Gram-negative, non-spore-forming, rod-shaped, facultative anaerobic, and non-motile. Their width is approximately 0.3 µm to 0.4 µm for a length of 3.0 µm to 6.0 µm. They are able to grow at an optimal temperature of 37 Celsius grade but also 41 °C. Conversely to Klebsiella pneumoniae, R. electrica strains are also able to grow at 10 °C.[1] However, R. electrica strains can be distinguished from other Raoultella species by their inability to grow at 5 °C. These bacteria are Voges-Proskauer positive and their ability to produce histamine has not been revealed.[5]

Taxonomy

Raoutella electrica is the first species of Raoultella described since the creation of the genus Raoultella by Drancourt et al. in 2001. This species received the epithet of electrica (e.lec′tri.ca. L. n. electrum amber; L. suff. -icus -a -um suffix referring to; N.L. fem. adj. electrica referring to the generation of electricity) remerbering where the type strain has been isolated (anodic biofilms of a microbial fuel cell in Sapporo).[1] · [6] The type strain is the strain 1GB. For its description, strain 1GB has been deposited in the japanese and in the south korean bacterial culture collections under the accession numbers NBRC 109676[6] and  KCTC 32430.[7] Strain 1GB is also deposited in the DSMZ culture collection under the number DSM 102253.[8]

Phylogenetic comparisons with 16s rRNA, rpoB, gyrA and parC genes from this species and those of others species from Klebsiella and Raoultella demonstrated that it belongs to Raoultella and confirmed the classification of this genus in a distinct cluster from Klebsiella.[1]

Pathogenicity

The pathogenic potential of R. electrica is currently not known.[5] However, this species has yet been isolated from chicken eggs in Jaipur (India) with a multiresistance profile.[9]

References
  1. Kimura ZI, Chung KM, 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): 1384–1388. doi:10.1099/ijs.0.058826-0. PMID 24449794.
  2. "Klebsiella electrica". LPSN.
  3. Registry-Migration.Gbif.Org (2021). GBIF Secretariat (ed.). "Raoultella electrica Kimura et al., 2014". GBIF.org. doi:10.15468/39omei. Retrieved 2022-01-15.
  4. Raoultella electrica - Encyclopedia of Life. EOL. Retrieved on 2022-01-15.
  5. Appel Tobias M; Quijano-Martínez Natalia; De La Cadena Elsa; Mojica María F; Villegas María Virginia (August 2, 2021). "Microbiological and Clinical Aspects of Raoultella spp". Frontiers in Public Health. 9 (686789): 686789. doi:10.3389/fpubh.2021.686789. PMC 8365188. PMID 34409007.
  6. "NBRC 109676: Raoultella electrica Kimura et al. 2014". NBRC Culture. May 31, 2013.
  7. "KCTC 32430 Raoultella electrica". Korean Collection for Type Culture. 2013.
  8. "Species Raoultella electrica". List of Prokaryotic names with Standing in Nomenclature. Retrieved 24 November 2021.
  9. A.K. Jain; R. Yadav (January 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.
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