Boreskov

OP‐31The most frequent associations are Desulfurococcaceae‐Thermococcaceae, Pyrobaculum‐Desulfurococcaceae, Pyrobaculum‐Sulfolobaceae, Caldivirga‐Sulfolobaceae,Thaumarchaeota‐Thermococcaceae, Thaumarchaeota‐Thermoplasmatales. Theseassociations could be interpreted in light of longtime co‐existence of bacteria in the courseof Archaea evolution.AThaumarchaeotaNanoarchaeotaThermoplasmatalesBThaumarchaeotaHalobacteriaceaeMethanomicrobialesThermococcaceaeMethanosarcinalesMethanomicrobialesHalobacteriaceaeMethanococcalesMethanobacteriaceaeKorarchaeotaSulfolobaceaeDesulfurococcaceaeCaldivirgaPyrobaculumMethanosarcinalesMethanococcalesMethanobacteriaceaeThermoplasmatalesKorarchaeotaThermococcaceaeNanoarchaeotaSulfolobaceaeDesulfurococcaceaeCaldivirgaPyrobaculumFigure 1. Consensus phylogenetic trees of Archaea published in (A) Proc. Biol. Sci., 2011 [4] and (B)Proc. Natl. Acad. Sci. U.S.A., 2010 [5].This work was supported by RFBR grant No. 09‐04‐01641‐a and Biosphere Origin andEvolution program.References[1]. Pryszcz L.P. et al. (2010) MetaPhOrs: orthology and paralogy predictions from multiple phylogeneticevidence using a consistency‐based confidence score, Nucl. Acids Res., doi: 10.1093/nar/gkq953.[2]. Quang le S.et al. (2008) Empirical profile mixture models for phylogenetic reconstruction. Bioinformatics.,24:2317‐2323.[3]. Linz S. (2010) On Hill et al's conjecture for calculating the subtree prune and regraft distance betweenphylogenies. BMC Evol. Biol., 10:334.[4]. Kelly S. et al. (2011) Archaeal phylogenomics provides evidence in support of a methanogenic origin of theArchaea and a thaumarchaeal origin for the eukaryotes. Proc. Biol. Sci., 278:1009‐1018.[5]. Jun S.R. et al. (2010) Whole‐proteome phylogeny of prokaryotes by feature frequency profiles: Analignment‐free method with optimal feature resolution. Proc. Natl. Acad. Sci. U.S.A., 107:133‐138.84