FIG. 6.

RISA fingerprints from biofilms extracted from untreated manure, unamended microcosms, and FeCl₃ and FeCl₃+NaN₃ microcosms. Each lane corresponds to a community fingerprint at different incubation times (2, 6, and 20 days). Selected bands unique to FeCl₃-grown communities at day 10 were sequenced, and flanking portions of the 16S rRNA genes (150 bp) were used in BLAST analyses to determine closest relatives. A, Arcobacter sp. AY314754 (95%); B, Alcaligenes faecalis AF155147 (99%); C, Bacteroides thetaiotamicron AY773156 (94%); D, D. metallireducens AF297871 (100%); E, D. frappieri U40078 (97 to 99%); F, Kurthia sibirica AY773151 (98%).