PMID- 22967313 OWN - NLM STAT- MEDLINE DCOM- 20130405 LR - 20221207 IS - 1751-7915 (Electronic) IS - 1751-7915 (Print) IS - 1751-7915 (Linking) VI - 5 IP - 6 DP - 2012 Nov TI - Microbial community structure and dynamics in anaerobic fluidized-bed and granular sludge-bed reactors: influence of operational temperature and reactor configuration. PG - 738-52 LID - 10.1111/j.1751-7915.2012.00364.x [doi] AB - Methanogenic community structure and dynamics were investigated in two different, replicated anaerobic wastewater treatment reactor configurations [inverted fluidized bed (IFB) and expanded granular sludge bed (EGSB)] treating synthetic dairy wastewater, during operating temperature transitions from 37 degrees C to 25 degrees C, and from 25 degrees C to 15 degrees C, over a 430-day trial. Non-metric multidimensional scaling (NMS) and moving-window analyses, based on quantitative real-time PCR data, along with denaturing gradient gel electrophoresis (DGGE) profiling, demonstrated that the methanogenic communities developed in a different manner in these reactor configurations. A comparable level of performance was recorded for both systems at 37 degrees C and 25 degrees C, but a more dynamic and diverse microbial community in the IFB reactors supported better stability and adaptative capacity towards low temperature operation. The emergence and maintenance of particular bacterial genotypes (phylum Firmicutes and Bacteroidetes) was associated with efficient protein hydrolysis in the IFB, while protein hydrolysis was inefficient in the EGSB. A significant community shift from a Methanobacteriales and Methanosaetaceae towards a Methanomicrobiales-predominated community was demonstrated during operation at 15 degrees C in both reactor configurations. CI - (c) 2012 The Authors. Microbial Biotechnology (c) 2012 Society for Applied Microbiology and Blackwell Publishing Ltd. FAU - Bialek, Katarzyna AU - Bialek K AD - Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland. FAU - Kumar, Amit AU - Kumar A FAU - Mahony, Therese AU - Mahony T FAU - Lens, Piet N L AU - Lens PN FAU - O'Flaherty, Vincent AU - O'Flaherty V LA - eng SI - GENBANK/JF927800 SI - GENBANK/JF927801 SI - GENBANK/JF927802 SI - GENBANK/JF927803 SI - GENBANK/JF927804 SI - GENBANK/JF927805 SI - GENBANK/JF927806 SI - GENBANK/JF927807 SI - GENBANK/JF927808 SI - GENBANK/JF927809 SI - GENBANK/JF927810 SI - GENBANK/JF927811 SI - GENBANK/JF927812 SI - GENBANK/JF927813 SI - GENBANK/JF927814 SI - GENBANK/JF927815 SI - GENBANK/JF927816 SI - GENBANK/JF927817 SI - GENBANK/JF927818 SI - GENBANK/JF927819 SI - GENBANK/JF927820 SI - GENBANK/JF927821 SI - GENBANK/JF927822 SI - GENBANK/JF927823 SI - GENBANK/JF927824 SI - GENBANK/JF927825 SI - GENBANK/JF927826 SI - GENBANK/JF927827 SI - GENBANK/JF927828 SI - GENBANK/JF927829 SI - GENBANK/JF952003 SI - GENBANK/JF952004 SI - GENBANK/JF952005 SI - GENBANK/JF952006 SI - GENBANK/JF952007 SI - GENBANK/JF952008 SI - GENBANK/JF952009 SI - GENBANK/JF952010 SI - GENBANK/JF952011 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120911 PL - United States TA - Microb Biotechnol JT - Microbial biotechnology JID - 101316335 RN - 0 (DNA, Bacterial) RN - 0 (Sewage) RN - 0 (Waste Water) RN - OP0UW79H66 (Methane) SB - IM MH - Bacteria/*classification/*genetics MH - *Biota MH - Cluster Analysis MH - DNA, Bacterial/chemistry/genetics MH - Dairy Products MH - Denaturing Gradient Gel Electrophoresis MH - Food Industry MH - Methane/metabolism MH - Molecular Sequence Data MH - Phylogeny MH - Polymerase Chain Reaction MH - Sequence Analysis, DNA MH - Sewage/*microbiology MH - Temperature MH - Wastewater/*microbiology MH - Water Purification PMC - PMC3815895 EDAT- 2012/09/13 06:00 MHDA- 2013/04/06 06:00 PMCR- 2012/11/01 CRDT- 2012/09/13 06:00 PHST- 2012/04/12 00:00 [received] PHST- 2012/07/06 00:00 [revised] PHST- 2012/08/06 00:00 [accepted] PHST- 2012/09/13 06:00 [entrez] PHST- 2012/09/13 06:00 [pubmed] PHST- 2013/04/06 06:00 [medline] PHST- 2012/11/01 00:00 [pmc-release] AID - 10.1111/j.1751-7915.2012.00364.x [doi] PST - ppublish SO - Microb Biotechnol. 2012 Nov;5(6):738-52. doi: 10.1111/j.1751-7915.2012.00364.x. Epub 2012 Sep 11.