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Siderophore-promoted dissolution of smectite by fluorescent Pseudomonas

hal.structure.identifierUniversité de Strasbourg [UNISTRA]
dc.contributor.authorFERRET, Claire
hal.structure.identifierLaboratoire Sols et Environnement [LSE]
dc.contributor.authorSTERCKEMAN, Thibault
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierUniversité de Haute-Alsace (UHA) Mulhouse - Colmar [Université de Haute-Alsace (UHA)]
dc.contributor.authorCORNU, Jean-Yves
hal.structure.identifierLaboratoire d'Hydrologie et de Géochimie de Strasbourg [LHyGeS]
dc.contributor.authorGANGLOFF, Sophie
hal.structure.identifierUniversité de Strasbourg [UNISTRA]
dc.contributor.authorSCHALK, Isabelle J.
hal.structure.identifierUniversité de Strasbourg [UNISTRA]
dc.contributor.authorGEOFFROY, Valérie A.
dc.date.accessioned2024-04-08T12:02:22Z
dc.date.available2024-04-08T12:02:22Z
dc.date.issued2014
dc.identifier.issn1758-2229
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196199
dc.description.abstractEnSiderophores are organic chelators produced by microorganisms to fulfil their iron requirements. Siderophore-promoted dissolution of iron-bearing minerals has been clearly documented for some siderophores, but few studies have addressed metabolizing siderophore-producing bacteria. We investigated iron acquisition from clays by fluorescent Pseudomonads, bacteria that are ubiquitous in the environment. We focused on the interactions between smectite and Pseudomonas aeruginosa, a bacterium producing two structurally different siderophores: pyoverdine and pyochelin. The presence of smectite in iron-limited growth media promoted planktonic growth of P. aeruginosa and biofilm surrounding the smectite aggregates. Chemical analysis of the culture media indicated increases in the dissolved silicon, iron and aluminium concentrations following smectite supplementation. The use of P. aeruginosa mutants unable to produce either one or both of the two siderophores indicated that pyoverdine, the siderophore with the higher affinity for iron, was involved in iron and aluminium solubilization by the wild-type strain. However, in the absence of pyoverdine, pyochelin was also able to solubilize iron but with a twofold lower efficiency. In conclusion, pyoverdine and pyochelin, two structurally different siderophores, can solubilize structural iron from smectite and thereby make it available for bacterial growth.
dc.language.isoen
dc.publisherWiley
dc.title.enSiderophore-promoted dissolution of smectite by fluorescent Pseudomonas
dc.typeArticle de revue
dc.identifier.doi10.1111/1758-2229.12146
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalEnvironmental Microbiology Reports
bordeaux.page459-467
bordeaux.volume6, Special Issue: Microbes, metals and metalloids
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue5
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02636059
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02636059v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Microbiology%20Reports&rft.date=2014&rft.volume=6,%20Special%20Issue:%20Microbes,%20metals%20and%20metalloids&rft.issue=5&rft.spage=459-467&rft.epage=459-467&rft.eissn=1758-2229&rft.issn=1758-2229&rft.au=FERRET,%20Claire&STERCKEMAN,%20Thibault&CORNU,%20Jean-Yves&GANGLOFF,%20Sophie&SCHALK,%20Isabelle%20J.&rft.genre=article


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