PMID- 12469948 OWN - NLM STAT- MEDLINE DCOM- 20030310 LR - 20190922 IS - 1061-4303 (Print) IS - 1061-4303 (Linking) VI - 74 IP - 5 DP - 2002 Sep-Oct TI - Microbial community structures in foaming and nonfoaming full-scale wastewater treatment plants. PG - 437-49 AB - A survey of full-scale activated-sludge plants in Illinois revealed that filamentous foaming is a widespread problem in the state, and that the causes and consequences of foaming control strategies are not fully understood. To link microbial community structure to foam occurrence, microbial populations in eight foaming and nine nonfoaming full-scale activated-sludge systems were quantified using oligonucleotide hybridization probes targeting the ribosomal RNA (rRNA) of the mycolata; Gordonia spp.; Gordonia amarae; "Candidatus Microthrix parvicella"; the alpha-, beta-, and gamma-subclasses of the Proteobacteria, and members of the Cytophaga-Flavobacteria. Parallel measurements of microbial population abundance using hybridization of extracted RNA and fluorescence in situ hybridization (FISH) showed that the levels of mycolata, particularly Gordonia spp., were higher in most foaming systems compared with nonfoaming systems. Fluorescence in situ hybridization and microscopy suggested the involvement of "Candidatus Microthrix parvicella" and Skermania piniformis in foam formation in other plants. Finally, high numbers of "Candidatus Microthrix parvicella" were detected by FISH in foam and mixed liquor samples of one plant, whereas the corresponding levels of rRNA were low. This finding implies that inactive "Candidatus Microthrix parvicella" cells (i.e., cells with low rRNA levels) can cause foaming. FAU - de los Reyes, Francis L 3rd AU - de los Reyes FL 3rd AD - University of Illinois at Urbana-Champaign, USA. FAU - Rothauszky, Dagmar AU - Rothauszky D FAU - Raskin, Lutgarde AU - Raskin L LA - eng PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - Water Environ Res JT - Water environment research : a research publication of the Water Environment Federation JID - 9886167 RN - 0 (DNA Primers) RN - 0 (DNA, Bacterial) RN - 0 (RNA, Ribosomal) RN - 0 (Surface-Active Agents) SB - IM MH - Bacteria MH - DNA Primers MH - DNA, Bacterial/*genetics MH - Data Collection MH - In Situ Hybridization, Fluorescence MH - Population Dynamics MH - RNA, Ribosomal MH - Surface-Active Agents MH - *Waste Disposal, Fluid MH - *Water Microbiology EDAT- 2002/12/10 04:00 MHDA- 2003/03/11 04:00 CRDT- 2002/12/10 04:00 PHST- 2002/12/10 04:00 [pubmed] PHST- 2003/03/11 04:00 [medline] PHST- 2002/12/10 04:00 [entrez] AID - 10.2175/106143002x140233 [doi] PST - ppublish SO - Water Environ Res. 2002 Sep-Oct;74(5):437-49. doi: 10.2175/106143002x140233.