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Article: The quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulation
Title | The quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulation | ||||||
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Authors | |||||||
Keywords | Aerobic granules Biofilm Biological wastewater treatment Granulation Quorum sensing Signal chemical molecules | ||||||
Issue Date | 2010 | ||||||
Publisher | Springer. The Journal's web site is located at http://link.springer.de/link/service/journals/00253/index.htm | ||||||
Citation | Applied Microbiology And Biotechnology, 2010, v. 88 n. 3, p. 789-797 How to Cite? | ||||||
Abstract | Quorum sensing (QS) through signal chemical molecules is known to be essential to bacterial adhesion and biofilm formation. In this study, the QS ability of aerobic granules-a special form of biofilms used for biological wastewater treatment-was investigated and compared with that of conventional activated sludge flocs. A novel sectional membrane bioreactor was used together with a flow-cell to evaluate the possible influence of signal chemicals produced by the source sludge on the growth mode of bacterial cells. The results demonstrate the apparent production of QS chemicals from granules and its impact on initial cell attachment and granule formation. When granules were used as the signal-producing biomass, the attached-growth mode was dominant for the free cells, and the biofilm formation rate in the flow-cell was about ten times faster than in cases which used activated sludge as the signal source biomass. In addition, the intracellular extract from mature granules significantly accelerated the sludge granulation process. It is argued that the production and expression of QS signal chemicals from granules and granule precursors might have induced the gene expression of bacteria in suspension for attached growth rather than suspended growth, leading to granule formation and its stable structure. © Springer-Verlag 2010. | ||||||
Persistent Identifier | http://hdl.handle.net/10722/124559 | ||||||
ISSN | 2023 Impact Factor: 3.9 2023 SCImago Journal Rankings: 0.957 | ||||||
ISI Accession Number ID |
Funding Information: This research was supported by grant HKU7144/E07 from the Research Grants Council (RGC) of the Hong Kong SAR Government and grant 50828802 from the Natural Science Foundation of China. The technical assistance of Mr. Keith C. H. Wong is highly appreciated. | ||||||
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ren, TT | en_HK |
dc.contributor.author | Yu, HQ | en_HK |
dc.contributor.author | Li, XY | en_HK |
dc.date.accessioned | 2010-10-31T10:41:19Z | - |
dc.date.available | 2010-10-31T10:41:19Z | - |
dc.date.issued | 2010 | en_HK |
dc.identifier.citation | Applied Microbiology And Biotechnology, 2010, v. 88 n. 3, p. 789-797 | en_HK |
dc.identifier.issn | 0175-7598 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/124559 | - |
dc.description.abstract | Quorum sensing (QS) through signal chemical molecules is known to be essential to bacterial adhesion and biofilm formation. In this study, the QS ability of aerobic granules-a special form of biofilms used for biological wastewater treatment-was investigated and compared with that of conventional activated sludge flocs. A novel sectional membrane bioreactor was used together with a flow-cell to evaluate the possible influence of signal chemicals produced by the source sludge on the growth mode of bacterial cells. The results demonstrate the apparent production of QS chemicals from granules and its impact on initial cell attachment and granule formation. When granules were used as the signal-producing biomass, the attached-growth mode was dominant for the free cells, and the biofilm formation rate in the flow-cell was about ten times faster than in cases which used activated sludge as the signal source biomass. In addition, the intracellular extract from mature granules significantly accelerated the sludge granulation process. It is argued that the production and expression of QS signal chemicals from granules and granule precursors might have induced the gene expression of bacteria in suspension for attached growth rather than suspended growth, leading to granule formation and its stable structure. © Springer-Verlag 2010. | en_HK |
dc.language | eng | en_HK |
dc.publisher | Springer. The Journal's web site is located at http://link.springer.de/link/service/journals/00253/index.htm | en_HK |
dc.relation.ispartof | Applied Microbiology and Biotechnology | en_HK |
dc.rights | The original publication is available at www.springerlink.com | - |
dc.subject | Aerobic granules | en_HK |
dc.subject | Biofilm | en_HK |
dc.subject | Biological wastewater treatment | en_HK |
dc.subject | Granulation | en_HK |
dc.subject | Quorum sensing | en_HK |
dc.subject | Signal chemical molecules | en_HK |
dc.subject.mesh | Bacterial Adhesion | - |
dc.subject.mesh | Biofilms - growth and development | - |
dc.subject.mesh | Industrial Microbiology | - |
dc.subject.mesh | Quorum Sensing | - |
dc.subject.mesh | Sewage - chemistry - microbiology | - |
dc.title | The quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulation | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0175-7598&volume=88&issue=3&spage=789&epage=797&date=2010&atitle=The+quorum-sensing+effect+of+aerobic+granules+on+bacterial+adhesion,+biofilm+formation,+and+sludge+granulation | en_HK |
dc.identifier.email | Li, XY:xlia@hkucc.hku.hk | en_HK |
dc.identifier.authority | Li, XY=rp00222 | en_HK |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1007/s00253-010-2796-8 | en_HK |
dc.identifier.pmid | 20683715 | en_HK |
dc.identifier.scopus | eid_2-s2.0-78149357317 | en_HK |
dc.identifier.hkuros | 175086 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-78149357317&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 88 | en_HK |
dc.identifier.issue | 3 | en_HK |
dc.identifier.spage | 789 | en_HK |
dc.identifier.epage | 797 | en_HK |
dc.identifier.isi | WOS:000281789500018 | - |
dc.publisher.place | Germany | en_HK |
dc.identifier.scopusauthorid | Ren, TT=35367163400 | en_HK |
dc.identifier.scopusauthorid | Yu, HQ=13008678100 | en_HK |
dc.identifier.scopusauthorid | Li, XY=26642887900 | en_HK |
dc.identifier.citeulike | 7705713 | - |
dc.identifier.issnl | 0175-7598 | - |