Title: The first record in the literature of the possible plant virus disease that appeared in “Manyoshu”, a Japanese classic anthology, as far back as the time of the 8th century
Abstract: Yellow vein of Eupatorium chinense var. simplicifolium caused by a geminivirus (Osaki and Inouye, 1979) had long been attracted attentions by some Japanese botanists and plant pathologists. A poem written by the Empress Koken on the yellow leaf of Eupatorium in the year of 752 that appeared in “Manyoshu” would be the first record in all over the world in the literature of the possible plant virus disease.