Tomato spotted wilt tospovirus and impatiens necrotic spot tospovirus in Italy
Several papers were given at the first Franco-Italian Phytopathological Colloquium in Alghero, IT, on the occurrence of tomato spotted wilt tospovirus (potential EPPO A2 quarantine pest) and impatiens necrotic spot tospovirus (potential EPPO A2 quarantine pest).
In Puglia (VOULAS et al.) a further spread of tomato spotted wilt tospovirus had been observed. New outbreaks in the provinces of Foggia and Brindisi were recorded. Damage on tomatoes was in general low (10%), but other vegetable crops were affected much more heavily between 50% damage and complete yield loss. Vectors were mainly Frankliniella occidentalis (EPPO A2 quarantine pest) and Thrips tabaci. Impatiens necrotic spot virus was not detected.
VICCHI et al. reported that tomato spotted wilt and impatiens necrotic spot tospoviruses can be found mainly on ornamental and vegetable crops in Liguria and Emilia-Romagna. The main vector F. occidentalis is also present in these regions. In Liguria (RAMASSO et al.), TSWV can be found in the provinces of Imperia and Savona causing particularly serious losses in capsicum. In Savona the virus was also found infecting oleander and Pelargonium zonale. INSV is mainly restricted to the province of Imperia and has been found on ornamentals only. A few outbreaks in the province of Savona have been attributed to the import of infected plants from Imperia.
CAMELE et al. reported on the epidemiology of TSWV in Basilicata and Campania. In both regions the virus can be found on ornamentals and vegetables.
Sources
Presentations at the "Premier Colloque Italo-Français De Phytopathologie sur: Maladies nouvelles ou d'introduction récente en France, en Italie et dans le bassin méditerranéen", Alghero, IT, 1993-04-14/18.