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Mapping and diagnostic marker development for Soil-borne cereal mosaic virus resistance in bread wheat |
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| Authors: | Dragan Perovic Jutta Förster Pierre Devaux Djabbar Hariri Morgane Guilleroux Kostya Kanyuka Rebecca Lyons Jens Weyen David Feuerhelm Ute Kastirr Pierre Sourdille Marion Röder Frank Ordon |
| Institution: | 1. Julius Kuehn-Institute, Federal Research Centre for Cultivated Plants, Institute for Resistance Research and Stress Tolerance, Erwin-Baur-Str. 27, 06484, Quedlinburg, Germany 2. Saaten-Union Resistenzlabor GmbH, Hovedisser Str. 92, 33818, Leopoldsh?he, Germany 3. Florimond Desprez, 3, Rue Florimond Desprez, 59242, Cappelle en Pévèle, France 4. INRA, BIOGER, Route de Saint Cyr, 78026, Versailles Cedex, France 5. Department of Plant Pathology and Microbiology, Centre for Sustainable Pest and Disease Management, Rothamsted Research, Harpenden, AL5 2JQ, Hertfordshire, UK 6. Elsoms Seeds Ltd, Pinchbeck Road, PE11 1QG, Spalding, UK 7. Institute for Epidemiology and Pathogen Diagnostics, Julius Kuehn-Institute, Federal Research Centre for Cultivated Plants, Erwin-Baur-Str. 27, 06484, Quedlinburg, Germany 8. UMR 1095 Amélioration et Santé des Plantes, INRA, Domaine de Crouelle 234, Avenue du Brézet, Clermont Ferrand, France 9. Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Corrensstr. 3, 06466, Gatersleben, Germany |
| Abstract: | Monogenically-inherited resistance to Soil-borne cereal mosaic virus (SBCMV) in hexaploid bread wheat cultivars ‘Tremie’ and ‘Claire’ was mapped on chromosome 5D. The two closest flanking markers identified in the Claire-derived mapping population, Xgwm469-5D and E37M49, are linked to the resistance locus at distances of 1 and 9 cm, respectively. Xgwm469-5D co-segregated with the SBCMV resistance in the Tremie-derived population and with the recently identified Sbm1 locus in the cv. Cadenza. This suggested that Tremie and Claire carry a resistance gene allelic to Sbm1, or one closely linked to it. The diagnostic value of Xgwm469-5D was assessed using a collection of SBCMV resistant and susceptible cultivars. Importantly, all susceptible genotypes carried a null allele of Xgwm469-5D, whereas resistant genotypes presumably related to either Claire and Tremie or Cadenza revealed a 152 or 154 bp allele of Xgwm469-5D, respectively. Therefore, Xgwm469-5D is well suited for marker assisted selection for SBCMV resistance. |
| Keywords: | Soil-borne cereal mosaic virus (SBCMV) Winter wheat (Triticum aestivum) Resistance Sbm1 Marker assisted selection (MAS) |
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