| description |
Fruit trees, as apricots, can be infected by and are constantly exposed to the attack of viruses. As they are propagated on a vegetative way, this risk is present not only at the field, where they exists for decades, but also during propagation. Metagenomic diagnostic methods, based on next generation sequencing, offer unique possibilities to reveal all the presenting pathogens in the investigated sample. Using small RNA NGS, a special fields of this technique, we tested leaf samples of different varieties of apricot in isolator house and at open air stock nursery. As a result, we identified Cherry Virus A (CVA) and Little Cherry Virus1 (LChV1) first time in Hungary. Gained results were validated by RT-PCR and also by Northern blot in the case of CVA. Cloned and Sanger sequenced viral PCR products enabled us to investigate their phylogenetic relationships. Our results demonstrate, that small RNA NGS can offer a sensitive virus diagnostics method, moreover beside obligatory tested viruses we could detect CVA and LChV1. However as these pathogens haven’t been described in our country before, their role in symptom development and modification during coinfection with other viruses requires further investigations.Overall design: Virus diagnostics of 3 apricot varieties in isolator house (2 libraries) and open air stock nurseries (2 libraries) by Illumina sequencing of the small RNAs |