Clubroot, caused by the obligate parasite , is a severe soilborne disease of Brassicaceae.
Storage of clubroot gall is important for studies on pathogenicity and race identification. As the current storage method has been
used for more than 100 years, a new storage method should be developed and the most efficient way maintaining pathogenicity
should be determined. Effects of storage conditions with different storage periods on pathogenicity in galls of kimchi cabbage
were examined in a greenhouse. The experiments were performed under six conditions and four temperatures in order to
determine the most effective storage conditions for maintenance of pathogenicity. The most effective conditions for clubroot gall
storage was the storage of whole gall at -70ºC or storage of filtrate at the same temperature through eight layers of gauze after
homogenization of the galls.