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Transcriptional changes in two types of pre-mycorrhizal roots and in ectomycorrhizas of oak microcuttings inoculated with Piloderma croceum

hal.structure.identifierInteractions Arbres-Microorganismes [IAM]
dc.contributor.authorFRETTINGER, Patrick
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorDERORY, Jérémy
hal.structure.identifierLeipzig University / Universität Leipzig
dc.contributor.authorHERMANN, Sylvie
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorPLOMION, Christophe
hal.structure.identifierInteractions Arbres-Microorganismes [IAM]
dc.contributor.authorLAPEYRIE, Frédéric
hal.structure.identifierFriedrich-Schiller-Universität = Friedrich Schiller University Jena [Jena, Germany]
dc.contributor.authorOELMÜLLER, Ralf
hal.structure.identifierInteractions Arbres-Microorganismes [IAM]
dc.contributor.authorMARTIN, Francis
hal.structure.identifierLeipzig University / Universität Leipzig
dc.contributor.authorBUSCOT, Françoise
dc.date.issued2007
dc.identifier.issn0032-0935
dc.description.abstractEnThe formation of the ectomycorrhizaimplies an alteration in gene expression of both theplant and fungal partners, a process which starts beforethe formation of any symbiotic interface. However, littleis known on the regulation pattern occurring indiVerent parts of the root system. Our experimentalsystem consisting of a micropropagated oak with ahierarchical root system was shown to exhibit symbiosisfunctional traits prior to any mycorrhizal tissuediVerentiation after the inoculation with the basidiomycetePiloderma croceum. Using a cDNA array, theplant gene regulation was analyzed in the pre-mycorrhizalphase. Seventy-Wve transcripts showed diVerentialexpression in pre-mycorrhizal lateral and principalroots, and both root types exhibited diVerent sets ofresponsive genes. For transcripts selected according toa statistical analysis, the alteration in gene expressionwas conWrmed by RT-PCR and quantitative real-timePCR. Genes regulated in pre-mycorrhizal lateral rootsdisplayed an almost identical expression in mycorrhizas.In contrast, genes regulated in pre-mycorrhizalprincipal roots were often regulated diVerently in ectomycorrhizas.Down-regulation aVected most of the regulatedgenes involved in metabolism, whereas most ofthe regulated genes related to cell rescue functions,water regulation and defence response were up-regulated.Regulation of such genes could explain theincrease of global resistance observed in mycorrhizalplants.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enECTOMYCORHISE
dc.title.enTranscriptional changes in two types of pre-mycorrhizal roots and in ectomycorrhizas of oak microcuttings inoculated with Piloderma croceum
dc.typeArticle de revue
dc.identifier.doi10.1007/s00425-006-0355-4
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des plantes
bordeaux.journalPlanta
bordeaux.page331-340
bordeaux.volume225
bordeaux.issue2
bordeaux.peerReviewedoui
hal.identifierhal-02658206
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02658206v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Planta&rft.date=2007&rft.volume=225&rft.issue=2&rft.spage=331-340&rft.epage=331-340&rft.eissn=0032-0935&rft.issn=0032-0935&rft.au=FRETTINGER,%20Patrick&DERORY,%20J%C3%A9r%C3%A9my&HERMANN,%20Sylvie&PLOMION,%20Christophe&LAPEYRIE,%20Fr%C3%A9d%C3%A9ric&rft.genre=article


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