Details on the occurrence of Impatiens necrotic spot and Tomato spotted wilt tospoviruses in Czech Republic
Impatiens necrotic spot tospovirus (INSV – EPPO A2 quarantine pest) was found for the first time in Czech Republic in 1999 on imported plants of Columnea and Curcuma (see EPPO RS 2001/048). They were grown under glass among other ornamental crops. However, the virus has up to June 2000 been detected in 17 ornamental species in several horticultural glasshouses which had never imported plant material. On the infected sites, thrips species were determined and revealed the presence of Frankliniella occidentalis. Natural INSV infection was also found in Stellaria media which is an important weed in Czech conditions. INSV was included in the list of quarantine pests for Czech Republic in 2000. INSV was identified by ELISA using specific antibodies. The virus was transmitted to Nicotiana benthamiana and Datura stramonium. Typical tospovirus particles were detected by electron microscopy. Phytosanitary measures are being applied in all infected areas to eradicate the virus.
The situation of Impatiens necrotic spot tospovirus in Czech Republic can be described as follows: Present only in some areas in protected cultivation, under eradication.
Tomato spotted wilt tospovirus (TSWV – EPPO A2 quarantine pest) has occurred in the country since 1992 and until now has been detected in more than 100 plant species including ornamentals, vegetables and weeds. TSWV has become a serious problem in glasshouse crops. From an epidemiological point of view, the situation of INSV dissemination seems to be very similar to TSWV. Similarly, phytosanitary measures are being applied in all infected areas with the aim to eradicate the virus.
The situation of Tomato spotted wilt tospovirus in Czech Republic can be described as follows: Present only in some areas in protected cultivation, subjected to official control.
NPPO of CZ, 2001-10.
Mertelik, J.; Mokra, V. (1998) Tomato spotted wilt virus in ornamental plants, vegetables and weeds in the Czech Republic.
Acta Virologica, 42(5), 347-351.