Abstract
Synchytrium endobioticum, the infective agent for wart disease of potato, is an obligate pathogen establishing itself successfully on members of the Solanaceae. Its obligate nature and the absence of a monoxenic culture system have limited the level of biological knowledge attainable. We describe a monoxenic culture system using micropropagated potato plantlets. The pathogen was transferred successfully to a second set of plantlets in vitro which yielded resting spores, thus satisfying Koch's postulates for this disease.