Candidatus Legionella jeonii

Candidatus Legionella jeonii is a candidatus species of bacteria from the genus Legionella.[2][1] Previously known as X-bacterium,[3] Candidatus Legionella jeonii grows symbiotically in Amoeba proteus.[4] This endosymbiotic relationship was first noticed by Kwang Jeon and Joan Lorch in 1966.[5][3]

Candidatus Legionella jeonii
Scientific classification
Domain:
Bacteria
Phylum:
Pseudomonadota
Class:
Gammaproteobacteria
Order:
Legionellales
Family:
Legionellaceae
Genus:
Legionella
Species:
Ca. L. jeonii
Binomial name
Candidatus Legionella jeonii
Park et al. 2004[1]
Kwang Jeon's experiment: [I] Amoebae infected by x-bacteria [II] Many amoebae become sick and die [III] Survivors have x-bacteria living in their cytoplasm [IV] Antibiotics kill x-bacteria: host amoebae die as now dependent on x-bacteria.

A more recent reference[6] dropped "Candidatus" from its name.

References
  1. Park, M; Yun, ST; Kim, MS; Chun, J; Ahn, TI (December 2004). "Phylogenetic characterization of Legionella-like endosymbiotic X-bacteria in Amoeba proteus: a proposal for 'Candidatus Legionella jeonii' sp. nov". Environmental Microbiology. 6 (12): 1252–63. doi:10.1111/j.1462-2920.2004.00659.x. PMID 15560823.
  2. Taxonomy Browser
  3. "It Takes Teamwork: How Endosymbiosis Changed Life on Earth". evolution.berkeley.edu.
  4. Park, M.; Yun, S. T.; Hwang, S.-Y.; Chun, C.-I.; Ahn, T. I. (1 September 2006). "The dps Gene of Symbiotic "Candidatus Legionella jeonii" in Amoeba proteus Responds to Hydrogen Peroxide and Phagocytosis". Journal of Bacteriology. 188 (21): 7572–7580. doi:10.1128/JB.00576-06. PMC 1636265. PMID 16950918.
  5. Jeon, KW; Lorch, IJ (October 1967). "Unusual intra-cellular bacterial infection in large, free-living amoebae". Experimental Cell Research. 48 (1): 236–40. doi:10.1016/0014-4827(67)90313-8. PMID 4168507.
  6. Jeon, TJ (October 2008). "DNA adenine methylation of sams1 gene in symbiont-bearing Amoeba proteus". Journal of Microbiology (Seoul, Korea). 46 (5): 564–70. doi:10.1007/s12275-008-0129-8. PMID 18974959. S2CID 11553238.


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