Are some putative glycogen accumulating organisms (GAO) in anaerobic:aerobic activated sludge systems members of the alpha-Proteobacteria?
| dc.contributor.author | Beer, M.J. | |
| dc.contributor.author | Kong, Y. | |
| dc.contributor.author | Seviour, R. | |
| dc.date.issued | 2004 | |
| dc.description.abstract | <jats:p>Activated sludge plants designed to remove phosphorus microbiologically often perform unreliably. One suggestion is that the polyphosphate-accumulating organisms (PAO) are out-competed for substrates by another group of bacteria, the glycogen-accumulating organisms (GAO) in the anaerobic zones of these processes. This study used fluorescence <jats:italic>in situ</jats:italic> hybridization (FISH) and denaturing gradient gel electrophoresis (DGGE) to analyse the communities from laboratory-scale anaerobic : aerobic sequencing batch reactors. Members of the genus <jats:italic>Sphingomonas</jats:italic> in the <jats:italic>α</jats:italic>-<jats:italic>Proteobacteria</jats:italic> were present in large numbers in communities with poor phosphorus removal capacity where the biomass had a high glycogen content. Their ability to store poly-<jats:italic>β</jats:italic>-hydroxyalkanoates anaerobically, but not aerobically, and not accumulate polyphosphate aerobically is consistent with these organisms behaving as GAO there. No evidence was found to support an important role for the <jats:italic>γ</jats:italic>-<jats:italic>Proteobacteria</jats:italic> as possible GAO in these communities, although these bacterial populations have been considered in other studies to act as possible competitors for the PAO.</jats:p> | |
| dc.identifier.citation | Microbiology (United Kingdom), 2004; 150(7):2267-2275 | |
| dc.identifier.doi | 10.1099/mic.0.26825-0 | |
| dc.identifier.issn | 1350-0872 | |
| dc.identifier.issn | 1465-2080 | |
| dc.identifier.uri | https://hdl.handle.net/1959.8/88924 | |
| dc.language.iso | en | |
| dc.publisher | Society for General Microbiology | |
| dc.rights | Copyright status unknown | |
| dc.source.uri | https://doi.org/10.1099/mic.0.26825-0 | |
| dc.title | Are some putative glycogen accumulating organisms (GAO) in anaerobic:aerobic activated sludge systems members of the alpha-Proteobacteria? | |
| dc.type | Journal article | |
| pubs.publication-status | Published | |
| ror.mmsid | 9915913279401831 |