Tospoviruses in the Mediterranean Area
2012
Turina, Massimo | Tavella, Luciana | Ciuffo, Marina
Tospoviruses are among the most serious threats to vegetable crops in the Mediterranean basin. Tospovirus introduction, spread, and the diseases these viruses cause have been traced by epidemiological case studies. Recent research has centered on the close relationship between tospoviruses and their arthropod vectors (species of the Thripidae family). Here, we review several specific features of tospovirus–thrips associations in the Mediterranean. Since the introduction of Frankliniella occidentalis in Europe, Tomato spotted wilt virus (TSWV) has become one of the limiting factors for vegetable crops such as tomato, pepper, and lettuce. An increasing problem is the emergence of TSWV resistance-breaking strains that overcome the resistance genes in pepper and tomato. F. occidentalis is also a vector of Impatiens necrotic spot virus, which was first observed in the Mediterranean basin in the 1980s. Its importance as a cause of vegetable crop diseases is limited to occasional incidence in pepper and tomato fields. A recent introduction is Iris yellow spot virus, transmitted by the onion thrips Thrips tabaci, in onion and leek crops. Control measures in vegetable crops specific to Mediterranean conditions were examined in the context of their epidemiological features and tospovirus species which could pose a future potential risk for vegetable crops in the Mediterranean were discussed.
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