Detection and identification of viruses in the Polish black locust (Robinia pseudoacacia L.) population

Black locust (Robinia pseudoacacia L.) is characterized by fast growth, low environmental requirements and aesthetic values therefore it has become a very popular tree planted in forest urban areas. In recent years, altered shape trees with virus-like symptoms on their leaves have been observed. Therefore, the aim of this work was to identify virus species potentially causing visible symptoms. During surveys carried out 2016–2019, 683 black samples were collected. Out 223 identified isolates peanut stunt (PSV) (58.7%) predominant, followed strawberry latent ringspot (SLRSV) (27.8%) tomato ring (TBRV) (13.5%). The occurrence mixed infection also recorded. Annual observation infected confirms negative impact viruses growth general condition, leading many cases dieback felling trees.