Transcription profiling of grapevine resistance to downy mildew mediated by the Rpv1 and Rpv2 genes

ABSTRACT: Grapevine downy mildew caused by the Oomycete Plasmopara viticola is one of the most important diseases affecting Vitis spp. However, all cultivated European grapevine varieties are susceptible to P. viticola and the resistance needs to be introduced from other Vitaceae. Segregating populations derived from Muscadinia rotundifolia, a species closely related to Vitis, lead to the identification and mapping of two resistance genes, named Rpv1 and Rpv2. The macroscopic phenotypes of the resistance mediated by the two loci are different. Rpv2 plants completely inhibit P. viticola sporulation and produce very small necrotic lesions. In contrast, Rpv1 plants allow a rather limited but visible sporulation of P. viticola. The aim of the study is to understand the gene expression changes associated

ORGANISM(S): Vitis rotundifolia

SUBMITTER: sandrine balzergue 

PROVIDER: E-GEOD-11857 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress