Lasiodiplodia stem rot of cassava caused by Lasiodiplodia parva found in import plant quarantine inspection and its pathogenicity.
Motokura Y., Ueda K., Saito N., Saito Y.
Author Affiliation: Yokohama Plant Protection Station, Kitanaka-Dori 5-57, Naka-ku, Yokohama 231-0003, Japan.
Research Bulletin of the Plant Protection Service, Japan : 53-62
Abstract : Severe stem rot of Cassava, Manihot esculenta, was found on the cuttings imported from Brazil in plant quarantine inspection in Japan. The causal fungus was identified as Lasiodiplodia parva Phillips, Alves & Crous based on the morphological characteristics, inoculation trials, and molecular data analysis. In the inoculation trials used nine fresh fruit and one root crop, cassava isolates showed severe pathogenicity on all plants (orange, satsuma, grapefruit, kiwifruit, sand pear, papaya, mango, banana fruits and sweet potato roots). This is the first report of Lasiodiplodia stem rot of cassava (kukigusare-byo in Japanese) caused by L. parva found in the import plant quarantine inspection in Japan, and the pathogenicity of L. parva on all plants described above is also a new finding as far as we know.