PMID- 22575897 OWN - NLM STAT- MEDLINE DCOM- 20121101 LR - 20200826 IS - 1465-2080 (Electronic) IS - 1350-0872 (Linking) VI - 158 IP - Pt 7 DP - 2012 Jul TI - Identification of glucose-fermenting bacteria in a full-scale enhanced biological phosphorus removal plant by stable isotope probing. PG - 1818-1825 LID - 10.1099/mic.0.058818-0 [doi] AB - Microbiology in wastewater treatment has mainly been focused on problem-causing filamentous bacteria or bacteria directly involved in nitrogen and phosphorus removal, and to a lesser degree on flanking groups, such as hydrolysing and fermenting bacteria. However, these groups constitute important suppliers of readily degradable substrates for the overall processes in the plant. This study aimed to identify glucose-fermenting bacteria in a full-scale enhanced biological phosphorus removal (EBPR) wastewater treatment plant (WWTP), and to determine their abundance in similar WWTPs. Glucose-fermenting micro-organisms were identified by an in situ approach using RNA-based stable isotope probing. Activated sludge was incubated anaerobically with (13)C(6)-labelled glucose, and (13)C-enriched rRNA was subsequently reverse-transcribed and used to construct a 16S rRNA gene clone library. Phylogenetic analysis of the library revealed the presence of two major phylogenetic groups of gram-positive bacteria affiliating with the genera Tetrasphaera, Propionicimonas (Actinobacteria), and Lactococcus and Streptococcus (Firmicutes). Specific oligonucleotide probes were designed for fluorescence in situ hybridization (FISH) to specifically target the glucose-fermenting bacteria identified in this study. The combination of FISH with microautoradiography confirmed that Tetrasphaera, Propionicimonas and Streptococcus were the dominant glucose fermenters. The probe-defined fermenters were quantified in 10 full-scale EBPR plants and averaged 39 % of the total biovolume. Tetrasphaera and Propionicimonas were the most abundant glucose fermenters (average 33 and 4 %, respectively), while Streptococcus and Lactococcus were present only in some WWTPs (average 1 and 0.4 %, respectively). Thus the population of actively metabolizing glucose fermenters seems to occupy a relatively large component of the total biovolume. FAU - Nielsen, Jeppe Lund AU - Nielsen JL AD - Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 49, DK-9000 Aalborg, Denmark. FAU - Nguyen, Hien AU - Nguyen H AD - Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 49, DK-9000 Aalborg, Denmark. FAU - Meyer, Rikke Louise AU - Meyer RL AD - Interdisciplinary Nanoscience Centre (iNANO) and Department of Biological Sciences, University of Aarhus, Ny Munkegade, DK-8000 Aarhus C, Denmark. FAU - Nielsen, Per Halkjaer AU - Nielsen PH AD - Department of Biotechnology, Chemistry and Environmental Engineering, Aalborg University, Sohngaardsholmsvej 49, DK-9000 Aalborg, Denmark. LA - eng SI - GENBANK/JQ425742 SI - GENBANK/JQ425743 SI - GENBANK/JQ425744 SI - GENBANK/JQ425745 SI - GENBANK/JQ425746 SI - GENBANK/JQ425747 SI - GENBANK/JQ425748 SI - GENBANK/JQ425749 SI - GENBANK/JQ425750 SI - GENBANK/JQ425751 SI - GENBANK/JQ425752 SI - GENBANK/JQ425753 SI - GENBANK/JQ425754 SI - GENBANK/JQ425755 SI - GENBANK/JQ425756 SI - GENBANK/JQ425757 SI - GENBANK/JQ425758 SI - GENBANK/JQ425759 SI - GENBANK/JQ425760 SI - GENBANK/JQ425761 SI - GENBANK/JQ425762 SI - GENBANK/JQ425763 SI - GENBANK/JQ425764 SI - GENBANK/JQ425765 SI - GENBANK/JQ425766 SI - GENBANK/JQ425767 SI - GENBANK/JQ425768 SI - GENBANK/JQ425769 SI - GENBANK/JQ425770 SI - GENBANK/JQ425771 SI - GENBANK/JQ425772 SI - GENBANK/JQ425773 SI - GENBANK/JQ425774 SI - GENBANK/JQ425775 SI - GENBANK/JQ425776 SI - GENBANK/JQ425777 SI - GENBANK/JQ425778 SI - GENBANK/JQ425779 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120510 PL - England TA - Microbiology (Reading) JT - Microbiology (Reading, England) JID - 9430468 RN - 0 (Carbon Isotopes) RN - 0 (DNA, Bacterial) RN - 0 (DNA, Ribosomal) RN - 0 (RNA, Ribosomal, 16S) RN - 27YLU75U4W (Phosphorus) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Bacteria/*classification/*metabolism MH - *Biodiversity MH - Carbon Isotopes/metabolism MH - Cluster Analysis MH - DNA, Bacterial/chemistry/genetics MH - DNA, Ribosomal/chemistry/genetics MH - Fermentation MH - Glucose/*metabolism MH - In Situ Hybridization, Fluorescence MH - Isotope Labeling MH - Metagenome MH - Molecular Sequence Data MH - Phosphorus/*metabolism MH - Phylogeny MH - RNA, Ribosomal, 16S/genetics MH - Sequence Analysis, DNA MH - *Water Microbiology MH - Water Purification/methods EDAT- 2012/05/12 06:00 MHDA- 2012/11/02 06:00 CRDT- 2012/05/12 06:00 PHST- 2012/05/12 06:00 [entrez] PHST- 2012/05/12 06:00 [pubmed] PHST- 2012/11/02 06:00 [medline] AID - 10.1099/mic.0.058818-0 [doi] PST - ppublish SO - Microbiology (Reading). 2012 Jul;158(Pt 7):1818-1825. doi: 10.1099/mic.0.058818-0. Epub 2012 May 10.