Fig 5.

Maximum likelihood trees of archaeal (A) and bacterial (B) 16S rRNA gene sequences directly amplified from Lake Kasin sediment or obtained from the Fe(III)-reducing enrichment cultures. (A) ML tree of the Halanaerobiaceae. (B) ML tree of the Bacilli and the Peptococcaceae family of the Clostridia. Groups for which at least one representative sequence was found in Lake Kasin sediment or enrichments are printed in black. Groups with no representatives from Lake Kasin sediment or enrichments are printed in gray. (Groups of) sequences that match both forward and reverse qPCR primers designed for Halobaculum gomorrense (A)- and Desulfosporosinus sp. or Bacilli (B)-related sequences are shown in boldface.