Abstract
A description is provided for Synchytrium endobioticum. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Solanaceae (potato, Solanum tuberosum). Other plants infected experimentally include several species of Solanum (Karling, 1964), Petunia and Nicotiana spp. (53, 4566), Lycopersicon esculentum, Physalis and Capsicastrum spp. (59, 416). DISEASE: Potato wart disease, causing dark brown warty cauliflower-like excrescences of infected tubers, which decay to release golden-brown resting spores. On aerial shoots green galls may develop, composed of convoluted masses of tissue. GEOGRAPHICAL DISTRIBUTION: Africa, Asia, Europe, North America, South America (CMI Map 1, ed. 5, 1972). TRANSMISSION: By the movement of infected soil or plant tissues. Local dispersal by zoospores swimming in water films may also occur.