|
• The group is interested in dissecting the complex resistance to CMV in melon. This resistance had previously been described as oligogenic and recessive and possibly quantitative. To unveil this resistance, we are using genomic and genetic resources such as NILs, DHL and F2 populations and recently, we have established that it is composed of a gene (cmv1) conferring total resistance to some CMV strains, and at least two QTLs conferring partial resistance to other strains. Currently, we are addressing: 1) the map-based cloning of cmv1. 2) The fine mapping of the QTLs conferring resistance to other CMV strains. 3) The characterization of the virulence/avirulence determinant of the virus. Using this approach, we aim to understand the complex biologic and molecular relationship between CMV and the melon host plant and to isolate the relevant genes in order to develop resistance breeding programmes for melon cultivars.
• References:
• Essafi A, Díaz-Pendón JA, Moriones E, Monforte AJ, Garcia-Mas J, Martín-Hernández AM (2009). Dissection of the oligogenic resistance to Cucumber Mosaic Virus in the melon accession PI 161375. Theor Appl Genet 118:278-284
• Deleu W, Esteras C, Roig C, González-To M, Fernández-Silva I, Gonzalez-Ibeas D, Blanca J, Aranda MA, Arús P, Nuez F, Monforte AJ, Picó MB, Garcia-Mas J (2009). A set of EST-SNPs for map saturation and cultivar identification in melon. BMC Plant Biol 9:90
|