First report of Yambean mosaic virus in Brazil

Potyvirus can cause losses in several important crops worldwide. This study describes the identification of a potyvirus infecting Jack bean plants and causing severe mosaic in Piauí state, Brazil. The virus reproduced original symptoms in mechanically inoculated Jack bean plants. Further molecular and transmission electron microscopy assays enabled the identification of the causal virus as Yambean mosaic virus (YBMV). To the best of our knowledge, this report is the first to describe YBMV in Brazil.