Papaya meleira virus
| Literature database |
|---|
| 10 articles sorted by: |
| • year (recent ones first) |
| • research topics |
| • countries/regions |
| • host plants |
Authors: Paolla M.V. Abreu et al.
Source: Viruses 2015, 7(4), 1853-1870
Papaya meleira virus (PMeV) - (papaya sticky disease)
This virus causes the sticky disease of papaya in Mexico and Brazil. In Portuguese, meleira means sticky and refers to honey (= mel). Infected trees produce exudates on the leaves and the fruit surface that become sticky and darken when they oxidise. The changed flavour and the exudates make the fruits unmarketable, thus leaving removal of the infected trees as the only option for the farmers. No resistant cultivars are known. The disease can be experimentally transmitted using the leafhopper Empoasca papayae (García-Cámara et al., 2019).
The particles measure, 42 x 38 nm and contain dsRNA (12 kb). PMeV appears to be a member of the family Totiviridae and shows similarities to some mycoviruses from that family (Antunes et al., 2016). A second RNA component, a single-stranded RNA with a size of 4.5 kb is also associated with the disease. This ssRNA was originally regarded as a subgenomic part of PMeV, but is now considered to be a separate virus (named Papaya meleira virus 2 or PMeV2) with similarities to the umbraviruses. Both RNAs are involved in the disease and are both found in symptomatic papaya plants. It appears now that hybrid virus particles are formed, composed of the PMeV2 ssRNA and the PMeV capsid protein (Sá Antunes et al., 2020).
| Vernacular names | |
|---|---|
| • English: | Papaya meleira virus papaya sticky disease |
| • Português: | meleira do mamoeiro |
For a review of PMeV see Abreu et al. (2015).
- Other images of Papaya meleira virus (PaDIL - click to enlarge)
symptoms on papaya fruit
symptoms on papaya fruit
symptoms on papaya leaf
