club root


club·root

or club root C5444700 (clŭb′ro͞ot′, -ro͝ot′)n. A disease of cabbage and related plants, caused by a parasitic protist (Plasmodiophora brassicae) and characterized by knobby or club-shaped swellings on the roots and wilting, yellowing, and stunted growth of aboveground parts.

club root

n1. (Plant Pathology) a disease of cabbages and related plants, caused by the fungus Plasmodiophora brassicae, in which the roots become thickened and distorted