A serious disease of cruciferous (Brassicaceae) plants, e.g. cabbages and broccoli. Symptoms include wilting of plants in bright sunshine, and the leaves may take on a bluish or reddish coloration. The roots show characteristic gall-like swellings. The disease is caused by the fungus Plasmodiophora brassicae. This organism can survive in the soil for many years, even in the absence of host plants.
Subjects: Plant Sciences and Forestry — Ecology and Conservation.