PMID- 18586975 OWN - NLM STAT- MEDLINE DCOM- 20080919 LR - 20220216 IS - 1098-5336 (Electronic) IS - 0099-2240 (Print) IS - 0099-2240 (Linking) VI - 74 IP - 16 DP - 2008 Aug TI - Quantitative microbial community analysis of three different sulfidic mine tailing dumps generating acid mine drainage. PG - 5211-9 LID - 10.1128/AEM.00649-08 [doi] AB - The microbial communities of three different sulfidic and acidic mine waste tailing dumps located in Botswana, Germany, and Sweden were quantitatively analyzed using quantitative real-time PCR (Q-PCR), fluorescence in situ hybridization (FISH), catalyzed reporter deposition-FISH (CARD-FISH), Sybr green II direct counting, and the most probable number (MPN) cultivation technique. Depth profiles of cell numbers showed that the compositions of the microbial communities are greatly different at the three sites and also strongly varied between zones of oxidized and unoxidized tailings. Maximum cell numbers of up to 10(9) cells g(-1) dry weight were determined in the pyrite or pyrrhotite oxidation zones, whereas cell numbers in unoxidized tailings were significantly lower. Bacteria dominated over Archaea and Eukarya at all tailing sites. The acidophilic Fe(II)- and/or sulfur-oxidizing Acidithiobacillus spp. dominated over the acidophilic Fe(II)-oxidizing Leptospirillum spp. among the Bacteria at two sites. The two genera were equally abundant at the third site. The acidophilic Fe(II)- and sulfur-oxidizing Sulfobacillus spp. were generally less abundant. The acidophilic Fe(III)-reducing Acidiphilium spp. could be found at only one site. The neutrophilic Fe(III)-reducing Geobacteraceae as well as the dsrA gene of sulfate reducers were quantifiable at all three sites. FISH analysis provided reliable data only for tailing zones with high microbial activity, whereas CARD-FISH, Q-PCR, Sybr green II staining, and MPN were suitable methods for a quantitative microbial community analysis of tailings in general. FAU - Kock, Dagmar AU - Kock D AD - Federal Institute for Geosciences and Natural Resources (BGR), Stilleweg 2, 30655 Hannover, Germany. FAU - Schippers, Axel AU - Schippers A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080627 PL - United States TA - Appl Environ Microbiol JT - Applied and environmental microbiology JID - 7605801 RN - 0 (Acids) RN - 0 (DNA, Bacterial) RN - 0 (Industrial Waste) RN - 0 (Metals, Heavy) RN - 0 (Organic Chemicals) RN - 0 (SYBR Green II) SB - IM MH - Acids/metabolism MH - Archaea/growth & development MH - Bacteria/*growth & development/metabolism MH - Botswana MH - Colony Count, Microbial MH - DNA, Bacterial/analysis MH - Germany MH - In Situ Hybridization, Fluorescence MH - *Industrial Waste MH - Metals, Heavy/metabolism MH - *Mining MH - Organic Chemicals MH - Oxidation-Reduction MH - Polymerase Chain Reaction MH - Soil Microbiology MH - Sweden MH - Water Microbiology PMC - PMC2519280 EDAT- 2008/07/01 09:00 MHDA- 2008/09/20 09:00 PMCR- 2008/12/27 CRDT- 2008/07/01 09:00 PHST- 2008/07/01 09:00 [pubmed] PHST- 2008/09/20 09:00 [medline] PHST- 2008/07/01 09:00 [entrez] PHST- 2008/12/27 00:00 [pmc-release] AID - AEM.00649-08 [pii] AID - 0649-08 [pii] AID - 10.1128/AEM.00649-08 [doi] PST - ppublish SO - Appl Environ Microbiol. 2008 Aug;74(16):5211-9. doi: 10.1128/AEM.00649-08. Epub 2008 Jun 27.