Updated project metadata. Clubroot is a destructive root disease in Brassica species caused by a protist pathogen, Plasmodiophora brassicae. There is limited omics information available in response to the pathogen, especially in the early stages of pathogenesis. The goal of this study is to identify proteins (therefore genes) that are potentially involved in mediating resistance against clubroot pathogens and develop gene-specific markers to assist in molecular breeding.