DIAGRAM JEON EXPERIMENT- Endosymbiotic Theory Evidence

''Candidatus'' Legionella jeonii is a ''

candidatus In prokaryote nomenclature, ''Candidatus'' (Latin for candidate of Roman office) is used to name prokaryotic phyla that are well characterized but yet-uncultured. Contemporary sequencing approaches, such as 16S sequencing or metagenomics, provide m ...

'' species of

bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ...

from the genus ''

Legionella ''Legionella'' is a genus of pathogenic gram-negative bacteria that includes the species '' L. pneumophila'', causing legionellosis (all illnesses caused by ''Legionella'') including a pneumonia-type illness called Legionnaires' disease and a mi ...

''. Previously known as X-bacterium, ''Candidatus'' Legionella jeonii grows symbiotically in ''

Amoeba proteus ''Amoeba proteus'' is a large species of amoeba closely related to another genus of giant amoebae, ''Chaos''. As such, the species is sometimes given the alternative scientific name ''Chaos diffluens''. This protozoan uses extensions called pseu ...

''. This

endosymbiotic An ''endosymbiont'' or ''endobiont'' is any organism that lives within the body or cells of another organism most often, though not always, in a mutualistic relationship. (The term endosymbiosis is from the Greek: ἔνδον ''endon'' "within" ...

relationship was first noticed by Kwang Jeon and Joan Lorch in 1966. A more recent reference dropped "Candidatus" from its name.

References

Legionellales Bacteria described in 2004 Candidatus taxa {{Legionellales-stub