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Article: The quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulation

TitleThe quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulation
Authors
KeywordsAerobic granules
Biofilm
Biological wastewater treatment
Granulation
Quorum sensing
Signal chemical molecules
Issue Date2010
PublisherSpringer. 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?
AbstractQuorum 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 Identifierhttp://hdl.handle.net/10722/124559
ISSN
2015 Impact Factor: 3.376
2015 SCImago Journal Rankings: 1.262
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council (RGC) of the Hong Kong SAR GovernmentHKU7144/E07
Natural Science Foundation of China50828802
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 FieldValueLanguage
dc.contributor.authorRen, TTen_HK
dc.contributor.authorYu, HQen_HK
dc.contributor.authorLi, XYen_HK
dc.date.accessioned2010-10-31T10:41:19Z-
dc.date.available2010-10-31T10:41:19Z-
dc.date.issued2010en_HK
dc.identifier.citationApplied Microbiology And Biotechnology, 2010, v. 88 n. 3, p. 789-797en_HK
dc.identifier.issn0175-7598en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124559-
dc.description.abstractQuorum 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.languageengen_HK
dc.publisherSpringer. The Journal's web site is located at http://link.springer.de/link/service/journals/00253/index.htmen_HK
dc.relation.ispartofApplied Microbiology and Biotechnologyen_HK
dc.rightsThe original publication is available at www.springerlink.com-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectAerobic granulesen_HK
dc.subjectBiofilmen_HK
dc.subjectBiological wastewater treatmenten_HK
dc.subjectGranulationen_HK
dc.subjectQuorum sensingen_HK
dc.subjectSignal chemical moleculesen_HK
dc.subject.meshBacterial Adhesion-
dc.subject.meshBiofilms - growth and development-
dc.subject.meshIndustrial Microbiology-
dc.subject.meshQuorum Sensing-
dc.subject.meshSewage - chemistry - microbiology-
dc.titleThe quorum-sensing effect of aerobic granules on bacterial adhesion, biofilm formation, and sludge granulationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://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+granulationen_HK
dc.identifier.emailLi, XY:xlia@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1007/s00253-010-2796-8en_HK
dc.identifier.pmid20683715en_HK
dc.identifier.scopuseid_2-s2.0-78149357317en_HK
dc.identifier.hkuros175086en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78149357317&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume88en_HK
dc.identifier.issue3en_HK
dc.identifier.spage789en_HK
dc.identifier.epage797en_HK
dc.identifier.isiWOS:000281789500018-
dc.publisher.placeGermanyen_HK
dc.identifier.scopusauthoridRen, TT=35367163400en_HK
dc.identifier.scopusauthoridYu, HQ=13008678100en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.citeulike7705713-

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