Abstract
AbstractThe genome sequences of two Polish Kra and Ros isolates of Tomato torrado virus (ToTV) were determined and compared with data of previously described ToTV isolates and other Torradovirus members. Whole‐genome sequence comparisons revealed 97.0–99.6% nucleotide sequence identities and close relatedness, with other known ToTV isolates. The high homology between Kra, Ros and Wal'03 ToTVs is likely responsible for the similar symptoms observed on infected plants. However, the symptoms differed in intensity and various host specificity. We report that Kra ToTV caused a milder expression of symptoms on Solanum tuberosum than Wal'03. We hypothesize this may be a result of the significant variability observed within the 3′‐UTR of RNA1 of Kra as well as of Ros ToTV isolates. In the light of this fact, potato may be considered an indicator plant for distinguishing Kra and Wal'03 ToTV isolates.
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