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Appl. Environ. Microbiol., 03 1997, 1178-1181, Vol 63, No. 3
BJ MacGregor, DP Moser, EW Alm, KH Nealson and DA Stahl
RNA from Lake Michigan sediment was hybridized with a DNA probe for
archaeal 16S rRNA. There was a peak of archaeal rRNA abundance in the oxic
zone and another immediately below it. Six contributing species were
identified by PCR amplification of extracted DNA with primers specific for
archaeal rDNA: two related to Methanosarcina acetivorans and four related
to marine crenarchaeotal sequences. rRNA quantification using a DNA probe
specific for this crenarchaeotal assemblage showed it is most abundant in
the oxic zone, where it accounts for about 10% of total archaeal rRNA.
Copyright © 1997, American Society for Microbiology
Crenarchaeota in Lake Michigan sediment
Department of Civil Engineering, Northwestern University, Evanston, Illinois 60201, USA.
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