Successful pathogens often induce plant developmental pathways to suppress plant defence. As a result, diseased plants frequently display symptoms such as hypertrophy, hyperplasia, hypocotyls elongation and increase of bushiness. Plasmodiophora brassicae is such a pathogen. P.brassicae is a biotrophic fungus, the causal agent of clubroot disease of brassica and Arabidopsis. This disease is charact ...