A new elongated virus was isolated from symtomless wasabi (Eutrema wasabi M.) plants. The virus has a peak in length distribution at 750-780nm and was transmitted by sap but not by aphids (Myzus persicae and Lipaphis erysimi). The host range was restricted to wasabi. No inclusion body characteristic of potyvirus was observed in infected tissues of wasabi. The virus did not serologically related to turnip mosaic virus. The name of wasabi latent virus is proposed.
