Biology:Raoultella

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Short description: Genus of bacteria

Raoultella
Raoultella planticola Standard I colonies 97.jpg
Raoultella planticola
Scientific classification
Domain:
Bacteria
Phylum:
Pseudomonadota
Class:
Gammaproteobacteria
Order:
Enterobacterales
Family:
Enterobacteriaceae
Genus:
Raoultella

Drancourt et al., 2001
Species

Raoultella electrica
Raoultella ornithinolytica
Raoultella planticola
Raoultella terrigena

The genus Raoultella is composed of Gram-negative, oxidase-negative, aerobic, nonmotile, capsulated, facultatively anaerobic rods (formerly designated Klebsiella) in the family Enterobacteriaceae. It is named after the French bacteriologist Didier Raoult.[1][2][3] The existence of this genus renders the genus Klebsiella paraphyletic, and it has been repeatedly proposed to consider Raoultella a junior synonym of Klebsiella.

Description

Raoultella planticola on MacConkey agar, showing a positive result (the microorganism has the ability to degrade lactose, which is detected by the pH indicator neutral red). The technique of the streaking is done by using 13 streaks.

Members of genus Raoultella grow at 10 °C consistent with their recovery from plants, soil, and water, whereas members of Klebsiella do not grow at 10 °C[4] and are mainly recovered from mammals' mucosae. Klebsiella oxytoca is an exception, and a proposal to classify K. oxytoca in a separate, unnamed genus has been made.[5]

It consists of species Raoultella electrica, Raoultella ornithinolytica, Raoultella planticola and Raoultella terrigena.[6]

In human infections, Raoultella species are generally sensitive to treatment with carbapenems. In one series, 92% were sensitive to ciprofloxacin. More than 10% produced extended-spectrum beta-lactamases.[7]

Species

Type species for this genus are:

Synonym

A phylogenetic tree of Klebsiella, based on a 2.93-Mbp alignment, unambiguously places R. ornithinolytica sister to K. oxytoca within the larger Klebsiella phylogeny and suggests abandoning the genus Raoultella designation.[13]

Robust phylogenetic analyses have repeatedly shown that species classified into this genus are nested in the genus Klebsiella, indicating Raoultella should be abandoned and considered a junior synonym of Klebsiella.[14][15][16][17]

In November 2021, the synonym Klebsiella electrica is reported "not validly published".[18] The correct name with a valid nomenclatural status is Raoultella electrica.[9]

References

  1. ↑ 1.0 1.1 1.2 1.3 Drancourt, M; Bollet, C; Carta, A; Rousselier, P (May 2001). "Phylogenetic analyses of Klebsiella species delineate Klebsiella and Raoultella gen. nov., with description of Raoultella ornithinolytica comb. nov., Raoultella terrigena comb. nov. and Raoultella planticola comb. nov.". International Journal of Systematic and Evolutionary Microbiology 51 (Pt 3): 925–32. doi:10.1099/00207713-51-3-925. PMID 11411716. 
  2. ↑ "Genus Raoultella". https://lpsn.dsmz.de/genus/raoultella. .
  3. ↑ "Raoultella". https://eol.org/pages/97426. .
  4. ↑ Manual of clinical microbiology. Patrick R. Murray, Ellen Jo Baron (9th ed.). Washington, D.C.. 2007. pp. 705. ISBN 978-1-55581-587-5. OCLC 647917473. https://www.worldcat.org/oclc/647917473. 
  5. ↑ Jain, K.; Radsak, K.; Mannheim, W. (1974). "Differentiation of the Oxytocum group from Klebsiella by deoxyribonucleic acid hybridization". Int J Syst Bacteriol 24 (4): 402–407. doi:10.1099/00207713-24-4-402. 
  6. ↑ J.P. Euzéby: List of Prokaryotic names with Standing in Nomenclature – integrated into the DSMZ’s Prokaryotic Nomenclature Up-to-date (PNU) database
  7. ↑ Sêkowska, Alicja; Bogiel, Tomasz; Woźniak, Marcin; Gospodarek-Komkowska, Eugenia (2020-02-01). "Raoultella spp. – reliable identification, susceptibility to antimicrobials and antibiotic resistance mechanisms" (in en). Journal of Medical Microbiology 69 (2): 233–238. doi:10.1099/jmm.0.001150. ISSN 0022-2615. PMID 31971501. 
  8. ↑ Kimura, Z; 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): 1384–8. doi:10.1099/ijs.0.058826-0. PMID 24449794. 
  9. ↑ 9.0 9.1 "Species Raoultella electrica". https://lpsn.dsmz.de/species/raoultella-electrica. .
  10. ↑ "Species Raoultella ornithinolytica". https://lpsn.dsmz.de/species/raoultella-ornithinolytica. .
  11. ↑ "Species Raoultella planticola". https://lpsn.dsmz.de/species/raoultella-planticola. .
  12. ↑ "Species Raoultella terrigena". https://lpsn.dsmz.de/species/raoultella-terrigena. .
  13. ↑ Hudson, Corey; Bent, Zachary; Meagher, Robert; Williams, Kelly (June 6, 2014). "Resistance Determinants and Mobile Genetic Elements of an NDM-1-Encoding Klebsiella pneumoniae Strain". PLOS ONE 9 (6): e99209. doi:10.1371/journal.pone.0099209. PMID 24905728. Bibcode: 2014PLoSO...999209H. 
  14. ↑  , Wikidata Q21132017
  15. ↑  , Wikidata Q108677989
  16. ↑  , Wikidata Q108866689
  17. ↑  , Wikidata Q104798151
  18. ↑ "Species Klebsiella electrica". https://lpsn.dsmz.de/species/klebsiella-electrica. 

Wikidata ☰ Q7293782 entry




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