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Effect of the metals iron, copper and silver on fluorobenzene biodegradation by Labrys portucalensis

2013Journal article Restricted access
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dc.contributor.authorMoreira, Irina S.
dc.contributor.authorAmorim, Catarina L.
dc.contributor.authorCarvalho, Maria F.
dc.contributor.authorFerreira, António C.
dc.contributor.authorAfonso, Carlos M.
dc.contributor.authorCastro, Paula M. L.
dc.date.accessioned2013-05-03T09:55:09Z
dc.date.available2013-05-03T09:55:09Z
dc.date.issued2013
dc.description.abstractOrganic and metallic pollutants are ubiquitous in the environment. Many metals are reported to be toxic to microorganisms and to inhibit biodegradation. The effect of the metals iron, copper and silver on the metabolism of Labrys portucalensis F11 and on fluorobenzene (FB) biodegradation was examined. The results indicate that the addition of 1 mM of Fe2+ to the culture medium has a positive effect on bacterial growth and has no impact in the biodegradation of 1 and 2 mM of FB. The presence of 1 mM of Cu2+ was found to strongly inhibit the growth of F11 cultures and to reduce the biodegradation of 1 and 2 mM of FB to ca. 50 %, with 80 % of stoichiometrically expected fluoride released. In the experiments with resting cells, the FB degraded (from 2 mM supplied) was reduced ca. 20 % whereas the fluoride released was reduced to 45 % of that stoichiometrically expected. Ag+ was the most potent inhibitor of FB degradation. In experiments with growing cells, the addition of 1 mM of Ag+ to the culture medium containing 1 and 2 mM of FB resulted in no fluoride release, whereas FB degradation was only one third of that observed in control cultures. In the experiments with resting cells, the addition of Ag+ resulted in 25 % reduction in substrate degradation and fluoride release was only 20 % of that stoichiometrically expected. The accumulation of catechol and 4-fluorocatechol in cultures supplemented with Cu2+ or Ag+ suggest inhibition of the key enzyme of FB metabolism-catechol 1,2-dioxygenase.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationMOREIRA, Irina S... [et al.] - Effect of the metals iron, copper and silver on fluorobenzene biodegradation by Labrys portucalensis. Biodegradation. ISSN 1572-9729. Vol. 24, n.º 2 (2013), p. 245-255por
dc.identifier.doi10.1007/s10532-012-9581-6
dc.identifier.eissn1572-9729
dc.identifier.issn0923-9820
dc.identifier.urihttp://hdl.handle.net/10400.14/10415
dc.identifier.wosWOS:000315566900008
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.relationBIOLOGICAL PRODUCTION OF INDUSTRIALLY RELEVANT FLUOROORGANIC COMPOUNDS
dc.relationStrategic Project - LA 16 - 2011-2012
dc.subjectIronpor
dc.subjectCopperpor
dc.subjectSilverpor
dc.subjectFluorobenzenepor
dc.subjectBiodegradationpor
dc.subjectLabrys portucalensispor
dc.titleEffect of the metals iron, copper and silver on fluorobenzene biodegradation by Labrys portucalensispor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleBIOLOGICAL PRODUCTION OF INDUSTRIALLY RELEVANT FLUOROORGANIC COMPOUNDS
oaire.awardTitleStrategic Project - LA 16 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F28744%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F44670%2F2008/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FBIO%2F67306%2F2006/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/PEst-OE%2FEQB%2FLA0016%2F2011/PT
oaire.citation.endPage255
oaire.citation.issue2
oaire.citation.startPage245
oaire.citation.titleBiodegradation
oaire.citation.volume24
oaire.fundingStreamSFRH
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMoreira
person.familyNameAmorim
person.familyNameCarvalho
person.familyNameSilva Ferreira
person.familyNameAfonso
person.familyNameCastro
person.givenNameIrina Susana Sousa
person.givenNameCatarina L.
person.givenNameM. Fátima
person.givenNameAntonio Cesar
person.givenNameCarlos
person.givenNamePaula
person.identifierK-5841-2014
person.identifier1394766
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person.identifier.ciencia-id7C1F-6C72-354A
person.identifier.orcid0000-0001-6516-0994
person.identifier.orcid0000-0002-6756-552X
person.identifier.orcid0000-0002-7181-0540
person.identifier.orcid0000-0002-1188-1021
person.identifier.orcid0000-0002-5731-5789
person.identifier.orcid0000-0001-8841-6606
person.identifier.ridK-5841-2014
person.identifier.ridK-6091-2014
person.identifier.ridI-5989-2015
person.identifier.ridM-8241-2013
person.identifier.scopus-author-id36798094100
person.identifier.scopus-author-id36896692500
person.identifier.scopus-author-id14038677200
person.identifier.scopus-author-id36145043600
person.identifier.scopus-author-id7102781782
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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