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dc.contributorStreet, Kennethen_US
dc.contributorMackay, Michaelen_US
dc.contributorNabila, Yahiaouien_US
dc.contributorKeller, Beaten_US
dc.creatorKaur, Navreeten_US
dc.identifier.citationNavreet Kaur, Kenneth Street, Michael Mackay, Yahiaoui Nabila, Beat Keller. (20/5/2008). Molecular approaches for characterization and use of natural disease resistance in wheat. European Journal of Plant Pathology, 121 (3), pp. 387-397.en_US
dc.description.abstractWheat production is threatened by a constantly changing population of pathogen species and races. Given the rapid ability of many pathogens to overcome genetic resistance, the identification and practical implementation of new sources of resistance is essential. Landraces and wild relatives of wheat have played an important role as genetic resources for the improvement of disease resistance. The use of molecular approaches, particularly molecular markers, has allowed better characterization of the genetic diversity in wheat germplasm. In addition, the molecular cloning of major resistance (R) genes has recently been achieved in the large, polyploid wheat genome. For the first time this allows the study and analysis of the genetic variability of wheat R loci at the molecular level and therefore, to screen for allelic variation at such loci in the gene pool. Thus, strategies such as allele mining and ecotilling are now possible for characterization of wheat disease resistance. Here, we discuss the approaches, resources and potential tools to characterize and utilize the naturally occurring resistance diversity in wheat. We also report a first step in allele mining, where we characterize the occurrence of known resistance alleles at the wheat Pm3 powdery mildew resistance locus in a set of 1,320 landraces assembled on the basis of eco-geographical criteria. From known Pm3 R alleles, only Pm3b was frequently identified (3% of the tested accessions). In the same set of landraces, we found a high frequency of a Pm3 haplotype carrying a susceptible allele of Pm3. This analysis allowed the identification of a set of resistant lines where new potentially functional alleles would be present. Newly identified resistance alleles will enrich the genetic basis of resistance in breeding programmes and contribute to wheat improvement.en_US
dc.publisherSpringer (part of Springer Nature)en_US
dc.rightsCopyrighted; Non-commercial educational use onlyen_US
dc.sourceEuropean Journal of Plant Pathology;121,(2008) Pagination 387,397en_US
dc.subjectgenetic diversityen_US
dc.subjectallele miningen_US
dc.subjectwheat powdery mildewen_US
dc.titleMolecular approaches for characterization and use of natural disease resistance in wheaten_US
dc.typeJournal Articleen_US
cg.contributor.centerInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.centerUniversity of Zurich - UZHen_US
cg.contributor.centerAustralian Winter Cereals Collectionen_US
cg.contributor.funderInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
cg.contributor.projectCommunication and Documentation Information Services (CODIS)en_US
cg.contributor.project-lead-instituteInternational Center for Agricultural Research in the Dry Areas - ICARDAen_US
dc.identifier.statusLimited accessen_US

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