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Diversity and distribution of a deeply branched novel proteobacterial group found in anaerobic-aerobic activated sludge processes
- Source :
- Environmental Microbiology. 4:753-757
- Publication Year :
- 2002
- Publisher :
- Wiley, 2002.
-
Abstract
- A novel coccobacilli group found previously in enhanced biological phosphorus removal (EBPR) systems was further revealed to have a high degree of diversity and distribution in various activated sludge systems. Phylogenetic analysis based on 14 existing and 18 newly retrieved 16S rRNA sequences revealed that these sequences formed a novel cohesive cluster with seven subgroups in the gamma-Proteobacteria. Fluorescence in situ hybridization with a set of probes designed specifically targeting the novel group at different hierarchical levels showed that the novel group with a coccoid (2-4 micro m) to occasionally long-rod (up to 20 micro m) shape widely distributed and in some cases predominated in sludge samples taken from nine lab- and full-scale EBPR systems (10-50% of total cells) and four conventional activated sludge systems (1-10%). Variation of predominance was also observed among those subgroups in systems showing deteriorated or effective EBPR activity.
- Subjects :
- biology
Ecology
Candidatus Accumulibacter
biology.organism_classification
16S ribosomal RNA
Microbiology
Candidatus Accumulibacter phosphatis
Phosphorus metabolism
Polyphosphate-accumulating organisms
Activated sludge
Enhanced biological phosphorus removal
Biochemistry
Proteobacteria
Ecology, Evolution, Behavior and Systematics
Subjects
Details
- ISSN :
- 14622920 and 14622912
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Environmental Microbiology
- Accession number :
- edsair.doi...........a5da5b36e771bb63968b1c33825db644