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dc.contributor.authorBrun, Hortense
dc.contributor.authorChevre, Anne-Marie
dc.contributor.authorFitt, Bruce D.L.
dc.contributor.authorPowers, Stephen
dc.contributor.authorBesnard, Anne-Laure
dc.contributor.authorErmel, Magali
dc.contributor.authorHuteau, Virginie
dc.contributor.authorMarquer, Bruno
dc.contributor.authorEber, Frederique
dc.contributor.authorRenard, Michel
dc.contributor.authorAndrivon, Didier
dc.identifier.citationBrun , H , Chevre , A-M , Fitt , B D L , Powers , S , Besnard , A-L , Ermel , M , Huteau , V , Marquer , B , Eber , F , Renard , M & Andrivon , D 2010 , ' Quantitative resistance increases the durability of qualitative resistance to Leptosphaeria maculans in Brassica napus ' , New Phytologist , vol. 185 , no. 1 , pp. 285-299 .
dc.identifier.otherPURE: 440148
dc.identifier.otherPURE UUID: 36aa8994-cfb8-400e-8000-55aea6426461
dc.identifier.otherWOS: 000272344800027
dc.identifier.otherScopus: 71249121484
dc.descriptionThe definitive version can be found at: Copyright Wiley-Blackwell [Full text of this article is not available in the UHRA]
dc.description.abstractIt has frequently been hypothesized that quantitative resistance increases the durability of qualitative (R-gene mediated) resistance but supporting experimental evidence is rare. To test this hypothesis, near-isogenic lines with/without the R-gene Rlm6 introduced into two Brassica napus cultivars differing in quantitative resistance to Leptosphaeria maculans were used in a 5-yr field experiment. Recurrent selection of natural fungal populations was done annually on each of the four plant genotypes, using crop residues from each genotype to inoculate separately the four series of field trials for five consecutive cropping seasons. Severity of phoma stem canker was measured on each genotype and frequencies of avirulence alleles in L. maculans populations were estimated. Recurrent selection of virulent isolates by Rlm6 in a susceptible background rendered the resistance ineffective by the third cropping season. By contrast, the resistance was still effective after 5 yr of selection by the genotype combining this gene with quantitative resistance. No significant variation in the performance of quantitative resistance alone was noted over the course of the experiment. We conclude that quantitative resistance can increase the durability of Rlm6. We recommend combining quantitative resistance with R-gene mediated resistance to enhance disease control and crop production.en
dc.relation.ispartofNew Phytologist
dc.subjectBrassica napus (oilseed rape)
dc.subjectdurable disease resistance
dc.subjectLeptosphaeria maculans (blackleg or phoma stem canker)
dc.subjectplant-pathogen coevolution
dc.subjectR-gene mediated resistance
dc.subjectsustainable disease control
dc.titleQuantitative resistance increases the durability of qualitative resistance to Leptosphaeria maculans in Brassica napusen
dc.contributor.institutionHealth & Human Sciences Research Institute
dc.contributor.institutionSchool of Life and Medical Sciences
dc.contributor.institutionDepartment of Human and Environmental Sciences
dc.contributor.institutionAgriculture, Veterinary and Food Sciences
dc.contributor.institutionGeography, Environment and Agriculture
dc.contributor.institutionCrop and Environmental Protection
dc.contributor.institutionWeight and Obesity Research Group
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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