Os korarqueotas (Korarchaeota) son un filo de arqueas.[1] O nome procede do xénero principal do grupo Korarchaeum. Tamén se lles ten chamado Xenarchaea e Xenarchaeota.
Foron descubertas a partir de mostras de secuencias xenómicas de ARNr de 16S recollidas en ambientes naturais e non se puideron cultivar. As Korarchaeota só se atoparon en ambientes hidrotermais de altas temperaturas. Parece que se diversificaron a diferentes niveis filoxenéticos de acordo coa temperatura, salinidade das augas, e xeografía.[2] Son pouco abundantes na natureza.[2][3][4] Os procesos metabólicos de Korarchaeota, incluíndo como conseguen enerxía e obteñen o carbono, son descoñecidos.
A análise das súas secuencias de ARNr de 16 S suxire que estas especies non forman parte dos dous principais grupos de arqueas, Crenarchaeota e Euryarchaeota[5]. Parece que son un grupo basal de arqueas, xa que teñen cracterísitcas tanto de Crenarchaeota coma de Euryarchaeota. O xenoma de Korarchaeum cryptofilum, que foi enriquecido a partir de cultivos mixtos, foi secuenciado e as súas características apoian a hipótese de que se ramificaron moi cedo do resto.[6].
↑ 2,02,1Auchtung TA, Shyndriayeva G, Cavanaugh CM. (2011). "16S rRNA phylogenetic analysis and quantification of Korarchaeota indigenous to the hot springs of Kamchatka, Russia". Extremophiles15 (1): 105–116. PMID21153671. doi:10.1007/s00792-010-0340-5.
↑Reigstad LJ, Jorgensen SL, Schleper C (2010). "Diversity and abundance of Korarchaeota in terrestrial hot springs of Iceland and Kamchatka". ISME J4 (3): 346–56. PMID19956276. doi:10.1038/ismej.2009.126.
↑Auchtung Thomas A. (2007) Ecology of the hydrothermal candidate archaeal division, Korarchaeota. PhD thesis, Harvard University.
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