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Bacterial shifts in nutrient solutions flowing through biofilters used in tomato soilless culture

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorRENAULT, David
hal.structure.identifierLaboratoire Universitaire de Biodiversité et Ecologie Microbienne [LUBEM]
dc.contributor.authorDÉNIEL, Franck
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVALLANCE, Jessica
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorBRUEZ, Emilie
hal.structure.identifierLaboratoire de Biotechnologie de l'Environnement [Narbonne] [LBE]
dc.contributor.authorGODON, Jean-Jacques
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorREY, Patrice
dc.date.accessioned2024-04-08T12:34:53Z
dc.date.available2024-04-08T12:34:53Z
dc.date.issued2018
dc.identifier.issn0095-3628
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197284
dc.description.abstractEnIn soilless culture, slow filtration is used to eliminate plant pathogenic microorganisms from nutrient solutions. The present study focused on the characterization and the potential functions of microbial communities colonizing the nutrient solutions recycled on slow filters during a whole cultivation season of 7 months in a tomato growing system. Bacterial microflora colonizing the solutions before and after they flew through the columns were studied. Two filters were amended with Pseudomonas putida (P-filter) or Bacillus cereus strains (B-filter), and a third filter was a control (C-filter). Biological activation of filter unit through bacterial amendment enhanced very significantly filter efficacy against plant potential pathogens Pythium spp. and Fusarium oxysporum. However, numerous bacteria (103–104 CFU/mL) were detected in the effluent solutions. The community-level physiological profiling indicated a temporal shift of bacterial microflora, and the metabolism of nutrient solutions originally oriented towards carbohydrates progressively shifted towards degradation of amino acids and carboxylic acids over the 7-month period of experiment. Single-strand conformation polymorphism fingerprinting profiles showed that a shift between bacterial communities colonizing influent and effluent solutions of slow filters occurred. In comparison with influent, 16S rDNA sequencing revealed that phylotype diversity was low in the effluent of P- and C-filters, but no reduction was observed in the effluent of the B-filter. Suppressive potential of solutions filtered on a natural filter (C-filter), where the proportion of Proteobacteria (α- and β-) increased, whereas the proportion of uncultured candidate phyla rose in P- and B-filters, is discussed.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectsoilless culture
dc.subject.enbacterial communities
dc.subject.enrecirculating solutions
dc.subject.ensingle-strand conformation polymorphism
dc.subject.encommunity level physiological profiling
dc.title.enBacterial shifts in nutrient solutions flowing through biofilters used in tomato soilless culture
dc.typeArticle de revue
dc.identifier.doi10.1007/s00248-017-1117-5
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalMicrobial ecology
bordeaux.page169-181
bordeaux.volume76
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.issue1
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02621093
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02621093v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Microbial%20ecology&rft.date=2018&rft.volume=76&rft.issue=1&rft.spage=169-181&rft.epage=169-181&rft.eissn=0095-3628&rft.issn=0095-3628&rft.au=RENAULT,%20David&D%C3%89NIEL,%20Franck&VALLANCE,%20Jessica&BRUEZ,%20Emilie&GODON,%20Jean-Jacques&rft.genre=article


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