Abstract
Phytophthora rot of New Zealand spinach Tetragonia teragonoides (Pall.) O. Kuntze occurred in Tokyo Metropolis in 2003. A Phytophthora species isolated from the diseased plants was identified as Phytophthora nicotianae van Breda de Haan. Inoculation tests showed that this fungus was the causal agent of this disease. This is the first report on the disease in Japan.
