Korarchaeota

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Korarchaeota
Korarchaeota.jpg
Scanning electron micrograph of the Obsidian Pool enrichment culture, showing Korarchaeota.
Scientific classification
Domain:
Archaea
Kingdom:
"Proteoarchaeota" or "Korarchaeota"
Phylum:
'Korarchaeota' Barns et al. 1996
species
Synonyms
  • Korarchaeota Barns et al. 1996
  • Xenarchaea
  • Xenarchaeota

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In taxonomy, the Korarchaeota are a phylum of the Archaea.[1] The name is derived from the Greek noun koros or kore, meaning ‘‘young man’’ or ‘‘young woman,’’ and the Greek adjective archaios which means ‘‘ancient.’’[2] They are also known as Xenarchaeota.

Analysis of their 16S rRNA gene sequences suggests that they are a deeply branching lineage that does not belong to the main archaeal groups, Crenarchaeota and Euryarchaeota.[3] Analysis of the genome of one korarchaeote that was enriched from a mixed culture revealed a number of both Crenarchaeota- and Euryarchaeota-like features and supports the hypothesis of a deep-branching ancestry.[4]

Ecology

The Korarchaeota have only been found in hydrothermal environments. They will appear to have diversified at different phylogenetic levels according to temperature, salinity (freshwater or seawater), and/or geography. [5] Korarchaeota have been found in nature in only low abundance.[5][6][7]

Each of these six hot springs (from top left, clockwise: Uzon4, Uzon7, Uzon8, Uzon9, Mut11, Mut13) in Kamchatka were found to contain Korarchaeota.
Each of these six hot springs (clockwise from top left: Uzon4, Uzon7, Uzon8, Uzon9, Mut11, Mut13) in Kamchatka was found to contain Korarchaeota.[5]

References

  1. ↑ See the NCBI webpage on Korarchaeota. Data extracted from the Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ James G. Elkins et al., A korarchaeal genome reveals insights into the evolution of the Archaea, Harvard University, PNAS, June 10, 2008, Vol. 105, no. 23, www.pnas.org/cgi/doi/10.1073/pnas.0801980105
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 5.2 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Auchtung Thomas A. (2007) Ecology of the hydrothermal candidate archaeal division, Korarchaeota. PhD thesis, Harvard University.

Further reading

Scientific journals

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Scientific books

Scientific databases

External links

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