Papaya ringspot virus (PRSV) is the most important virus affecting papaya and cucurbit
plants in tropical and subtropical areas. PRSV isolates are divided into biotypes P and W:
both the P and W types naturally infect plants in the family Cucurbitaceae, whereas the P
type naturally infects papaya (Carica papaya). Understanding the origin and nature of the
PRSV genetic diversity and evolution is critical for the implementation of control strategies
based on cross-protection and the deployment of transgenic plants that show resistance to …