First report of European mountain ash ringspot-associated virus in the Czech Republic.
In 2010, mountain ash (Sorbus aucuparia) trees showing ringspot symptoms, such as light rings, spots or variegation of the leaves, were found in Prague, Czech Republic. The causal organism was identified as European mountain ash ringspot-associated virus (EMARaV) based on genetic analyses. Comparisons of nucleotide and deduced amino acid sequences of the isolates with sequences from GenBank No. GU563319, GU563318, EU885293, EU885292 and NC_013108 showed identities ranging from 97 to 99% at the nucleotide level and 100% at the amino acid level. This is thought to be the first report of EMARaV occurrence in the Czech Republic.