Clubroot is caused by the soil-borne fungus Plasmodiophora brassicae, and it is the most serious disease of the brassica family. Physical Description Very serious problem where fungus attacks roots and kills the plant Google images of clubroot Species & Taxonomy Kingdom: Rhizaria Phylum: Cercozoa Class: Phytomyxea Order: Plasmodiophorales Family: Plasmodiophoraceae Genus Species: Plasmodiophora brassicae Lifecycle spores are […]