First record of Iris yellow spot virus in Serbia
In July 2007, symptoms resembling those of Iris yellow spot virus (Tospovirus, IYSV – EPPO Alert List) were observed in one onion (Allium cepa) seed crop in Sirig (20 km north of Novi Sad, Vojvodina province) in Serbia. Affected plants presented the characteristic symptoms of chlorotic or necrotic spindle and diamond-shaped lesions on the leaves and scapes. Symptomatic plants were found throughout the field and disease incidence was estimated at 80%. Leaf and scape samples were tested for the presence of IYSV, Tomato spotted wilt virus (TSWV) and Impatiens necrotic spot virus (INSV) by ELISA. All samples tested negative for TSWV and INSV. IYSV was detected serologically in 26 out of 34 onion samples. The identity of the virus was confirmed by inoculation to herbaceous indicators, RT-PCR and sequencing. Although further studies are needed to determine the distribution and incidence of the disease, this is the first report of IYSV in Serbia.
The situation of Iris yellow spot virus in Serbia can be described as follows: Present, first detected in 2007 in one onion seed crop near Novi Sad (at Sirig).
Bulajić A., Jović J, Krnjajić S, Petrov M, Djekić I, Krstić B (2008) First report of Iris yellow spot virus on onion (Allium cepa) in Serbia. Plant Disease 92(8), p 1247.