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Different genetic architectures underlie crop responses to the same pathogen: the {<em>Helianthus annuus * Phoma macdonaldii}</em> interaction case for black stem disease and premature ripening

hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBORDAT, Amandine
hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
dc.contributor.authorMARCHAND, Gwenaëlle
hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
dc.contributor.authorLANGLADE, Nicolas
hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
dc.contributor.authorPOUILLY, Nicolas
hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
dc.contributor.authorMUNOS, Stephane
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
dc.contributor.authorDECHAMP-GUILLAUME, Gregory
hal.structure.identifierLaboratoire des interactions plantes micro-organismes [LIPM]
dc.contributor.authorVINCOURT, Patrick
hal.structure.identifierAGroécologie, Innovations, teRritoires [AGIR]
hal.structure.identifierTerres Inovia
dc.contributor.authorBRET-MESTRIES, Emmanuelle
dc.date.issued2017
dc.identifier.issn1471-2229
dc.description.abstractEnBackground: Phoma macdonaldii has been reported as the causal agent of black stem disease (BS) and premature ripening (PR) on sunflower. PR is considered as the most widespread and detrimental disease on sunflower in France. While genetic variability and QTL mapping for partial resistance of sunflower to stem, collar and roots attacks have been reported on plantlets in controlled conditions, this work aims to describe the genetic variability in a subset of a sunflower lines, and for the first time to map QTL involved in PR resistance evaluated in field conditions using controlled inoculation. Results: An efficient and reliable method for inoculation used in field experiments induced stem base necrosis on up to 98% of all plants. A significant genetic variability for PR resistance in the field was detected among the 20 inbred lines of the core collection tested across the two years. For QTL mapping, the PR resistance evaluation was performed on two recombinant inbred lines (RIL) populations derived from the crosses XRQxPSC8 and FUxPAZ2 in two different years. QTL analyses were based on a newly developed consensus genetic map comprising 1007 non-redundant molecular markers. In each of the two RIL populations, different QTL involved in PR partial sunflower resistance were detected. The most significant QTL were detected 49 days post infection (DPI) on LG10 (LOD 7.7) and on LG7 (LOD 12.1) in the XRQxPSC8 and FUxPAZ2 RIL population, respectively. In addition, different QTL were detected on both populations for PR resistance measured between 14 and 35 DPI. In parallel, the incidence of natural attack of P. macdonaldii resulting in BS disease was recorded, showing that in these populations, the genetic of resistance to both diseases is not governed by the same factors. Conclusion: This work provides the first insights on the genetic architecture of sunflower PR resistance in the field. Moreover, the separate studies of symptoms on different organs and in time series allowed the identification of a succession of genetic components involved in the sunflower resistance to PR and BS diseases caused by Phoma macdonaldii along the development of the {plant * pathogen} interaction.
dc.language.isoen
dc.publisherBioMed Central
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjectphoma macdonaldii
dc.subject.enpremature ripening
dc.subject.enblack stem
dc.subject.ensunflower
dc.subject.enqtl mapping
dc.title.enDifferent genetic architectures underlie crop responses to the same pathogen: the {<em>Helianthus annuus * Phoma macdonaldii}</em> interaction case for black stem disease and premature ripening
dc.typeArticle de revue
dc.identifier.doi10.1186/s12870-017-1116-1
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Phytopathologie et phytopharmacie
bordeaux.journalBMC Plant Biology
bordeaux.page167-167
bordeaux.volume17
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02619317
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02619317v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=BMC%20Plant%20Biology&amp;rft.date=2017&amp;rft.volume=17&amp;rft.issue=1&amp;rft.spage=167-167&amp;rft.epage=167-167&amp;rft.eissn=1471-2229&amp;rft.issn=1471-2229&amp;rft.au=BORDAT,%20Amandine&amp;MARCHAND,%20Gwena%C3%ABlle&amp;LANGLADE,%20Nicolas&amp;POUILLY,%20Nicolas&amp;MUNOS,%20Stephane&amp;rft.genre=article


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