抄録
A new bacterial disease causing brown spot with yellow halo on the tara vine (Actinidia arguta) was found in 1988 in Kanagawa Prefecture. Two kinds of bacterium were isolated from these leaves. Bacterium isolated at high frequency produced brown spot with yellow halo on the leaves of A. arguta and canker symptoms on the kiwifruit. These symptoms were similar to naturally infected A. arguta and kiwifruit canker disease described by Serizawa et al. The second bacterium was not isolated so often and produced only brown spot without halo on the leaves of A. arguta. These bacteria were identified as Pseudomonas syringae pv. actinidiae and P.s. pv. syringae respectively on the basis of the bacteriological characteristics, and the reaction with a monoclonal antibody against P.s. pv. actinidiae and it's pathogenicity. This is first report that P.s. pv. actinidiae was isolated from wild grown A. arguta.
