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hal.structure.identifierUniversity of Bristol [Bristol]
dc.contributor.authorDUFF-FARRIER, Celia R A
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCANDRESSE, Thierry
hal.structure.identifierUniversity of Bristol [Bristol]
dc.contributor.authorBAILEY, Andy M
hal.structure.identifierFood and Environment Research Agency
dc.contributor.authorBOONHAM, Neil
hal.structure.identifierUniversity of Bristol [Bristol]
dc.contributor.authorFOSTER, Gary D
dc.date.issued2016
dc.identifier.issn1464-6722
dc.description.abstractEnThe potato Rx gene provides resistance against Pepino mosaic virus (PepMV) in tomato; however, recent work has suggested that the resistance conferred may not be durable. Resistance breaking can probably be attributed to multiple mutations observed to accumulate in the capsid protein (CP) region of resistance-breaking isolates, but this has not been confirmed through directed manipulation of an infectious PepMV clone. The present work describes the introduction of two specific mutations, A-T78 and A-T114, into the coat protein minimal elicitor region of an Rx-controlled PepMV isolate of the EU genotype. Enzyme-linked immunosorbent assay (ELISA) and phenotypic evaluation were conducted in three Rx-expressing and wild-type solanaceous hosts: Nicotiana benthamiana, Nicotiana tabacum and Solanum lycopersicum. Mutation A-T78 alone was sufficient to confer Rx-breaking activity in N. benthamiana and S. lycopersicum, whereas mutation A-T114 was found to be associated, in most cases, with a secondary A-D100 mutation to break Rx-mediated resistance in S. lycopersicum. These results suggest that the need for a second, fitness-restoring mutation may be dependent on the PepMV mutant under consideration. Both mutations conferred Rx breaking in S. lycopersicum, whereas neither conferred Rx breaking in N. tabacum and only A-T78 allowed Rx breaking in N. benthamiana, suggesting that Rx may function in a different manner depending on the genetic background in which it is present.
dc.language.isoen
dc.publisherWiley
dc.subjectELISA
dc.subject.enPepino mosaic virus
dc.subject.enRx gene
dc.subject.eninfectious clone
dc.subject.enpotexvirus
dc.subject.enresistance breaking
dc.subject.ensite-directed mutagenesis
dc.title.enEvidence for different, host-dependent functioning of Rx against both wild-type and recombinant Pepino mosaic virus.
dc.typeArticle de revue
dc.identifier.doi10.1111/mpp.12256
dc.subject.halSciences du Vivant [q-bio]/Microbiologie et Parasitologie
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale/Phytopathologie et phytopharmacie
dc.subject.halSciences du Vivant [q-bio]/Microbiologie et Parasitologie/Virologie
bordeaux.journalMolecular Plant Pathology
bordeaux.page120-126
bordeaux.volume17
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02632369
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02632369v1
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