Summary of thaumarchaeotal 16S rRNA gene sequences used for phylogenetic analysis and primer design.

aPhylum- and class-level archaeal groups.bRDP database release 10.22.cFiltered using quality check option (http://rdp.cme.msu.edu).dStandard deviation.eSequences belong to unclassified Thermoprotei.fNot shown in RDP database.gSubgroups in Thaumarchaeota (sequences closely related to MG-I). FSCG (forest soil crenarchaeotic group); HWCG-III (hot water crenarchaeotic group III); MG-I (marine group I); RC (rice cluster); SAGMCG-I (South Africa gold mine crenarchaeotic group I); SCG (soil crenarchaeotic group).hUnclassified Thaumarchaeota. Unclassified thaumarchaeotal subgroups found in this study.iArchaeal groups distantly related to the phylum Thaumarchaeota. DSAG (deep sea archaeotic group); THSCG (terrestrial hot spring crenarchaeotic group); MCG (miscellaneous crenarchaeotic group); UG (unclassified group).jAs shown in RDP database.kStandard deviation not available.