First report of Tomato chlorotic dwarf viroid in Norway and subsequent eradication
In Southwestern Norway, unusual symptoms were observed at the end of 2011 in one glasshouse of tomatoes (Solanum lycopersicum cv. ‘Juanita’) located in the county of Rogaland. Affected plants showed small and narrow leaves, leaf yellowing and bronzing, as well as a stunted and bushy appearance. In January 2012, a sample was submitted to Fera (GB) for diagnostic analysis. Molecular tests (real-time PCR, RT-PCR, sequencing) confirmed the presence of Tomato chlorotic dwarf viroid. In the affected glasshouse, the disease spread very rapidly, it was first observed in 3-4 plants in December 2011 and affected several hundred plants by the end of January 2012. In February and March, symptoms could be observed on plants in all parts of the infected greenhouse. All tomato plants were destroyed and the whole site was disinfected and left empty for 8 weeks. It is now considered that the disease has been eradicated.
The situation of Tomato chlorotic dwarf viroid in Norway can be described as follows: Absent, first found in 2011 in 1 glasshouse tomato crop, eradicated.
Fox A, Daly M, Nixon T, Brurberg MB, Blystad D, Harju V, Skelton A, Adams IP (2013) First report of Tomato chlorotic dwarf viroid (TCDVd) in tomato in Norway and subsequent eradication. New Disease Reports 27, 8. http://dx.doi.org/10.5197/j.2044-0588.2013.027.008