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Influence of Pythium oligandrum on the bacterial communities that colonize the nutrient solutions and the rhizosphere of tomato plants

hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorVALLANCE, Jessica
hal.structure.identifierUniversité de Brest [UBO]
dc.contributor.authorDENIEL, F.
hal.structure.identifierUniversité de Brest [UBO]
dc.contributor.authorBARBIER, G.
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorGUÉRIN-DUBRANA, Lucia
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorBENHAMOU, Nicole
hal.structure.identifierSanté et agroécologie du vignoble [UMR SAVE]
dc.contributor.authorREY, Patrice
dc.date.accessioned2024-04-08T12:30:50Z
dc.date.available2024-04-08T12:30:50Z
dc.date.issued2012
dc.identifier.issn0008-4166
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/197041
dc.description.abstractEnThe influence exerted by the biocontrol oomycete Pythium oligandrum on the bacterial populations proliferating in the rhizosphere of tomato plants grown in a hydroponic system and in the circulating solutions is studied in the present experiment. Quantitative PCR and single-strand conformation polymorphism were used to investigate the genetic structure and dynamics of the bacterial communities colonizing the root systems and the various circulating solutions. Quantitative PCR assays showed that bacteria heavily colonized the rhizosphere of tomato plants with, however, no significant density changes throughout the cultural season (April-September). Single strand conformation polymorphism fingerprints revealed the occurrence of transient perturbations in the rhizospheric indigenous bacterial communities following P. oligandrum introduction in the root system of plants. This effect was, however, transient and did not persist until the end of the cropping season. Interestingly, the genetic structure of the bacterial microflora colonizing either the roots or the nutrient solutions evolved throughout the cropping season. This temporal evolution occurred whatever the presence and persistence of P. oligandrum in the rhizosphere. Evidence is also provided that bacterial microflora that colonize the root system are different from the ones colonizing the circulating solutions. The relationships between these 2 microflora (at the root and solution levels) are discussed.
dc.language.isoen
dc.publisherNRC Research Press
dc.subjectsoilless culture
dc.subjectcommunautés bactériennes
dc.subjectcontrôle biologique
dc.subjectsolutions circulantes
dc.subject.enbacterial communities
dc.subject.enbiological control
dc.subject.enrecirculating solutions
dc.subject.ensingle-strand conformation
dc.subject.enpolymorphism
dc.subject.enrhizosphere
dc.subject.enculture hors-sol
dc.subject.enpolymorphisme de conformation simple brin
dc.subject.enrhizophère
dc.title.enInfluence of Pythium oligandrum on the bacterial communities that colonize the nutrient solutions and the rhizosphere of tomato plants
dc.typeArticle de revue
dc.identifier.doi10.1139/W2012-092
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.journalCanadian Journal of Microbiology
bordeaux.page1124-1134
bordeaux.volume58
bordeaux.hal.laboratoriesSanté et Agro-Ecologie du Vignoble (SAVE) - UMR 1065*
bordeaux.issue9
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02652801
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02652801v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Canadian%20Journal%20of%20Microbiology&rft.date=2012&rft.volume=58&rft.issue=9&rft.spage=1124-1134&rft.epage=1124-1134&rft.eissn=0008-4166&rft.issn=0008-4166&rft.au=VALLANCE,%20Jessica&DENIEL,%20F.&BARBIER,%20G.&GU%C3%89RIN-DUBRANA,%20Lucia&BENHAMOU,%20Nicole&rft.genre=article


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