Abstract
AbstractTomato black ring virus (TBRV), a member of the Nepovirus genus, is a serious plant pathogen distributed worldwide. It causes significant damage to several economically important crops, such as artichoke or strawberry. The TBRV bipartite genome consists of two polyadenylated single‐stranded positive‐sense RNA molecules, which may be accompanied by subviral particles such as defective interfering RNAs (DI RNAs) and satellite RNAs (satRNAs). In this study, we obtained the complete genome sequence of six TBRV isolates originating from different hosts and determined the presence of eight TBRV satRNAs. Subsequently, genetic variability, recombination, phylogenetic and selection pressure analyses were performed. The results revealed that the TBRV population is genetically diverse. The occurrence of potential recombination events, evidence of positive selection pressure acting on particular codons and the diversification of satRNAs within the TBRV population indicated that the virus mutates and can rapidly adapt to new environmental conditions or hosts. The presented data shed some light on TBRV evolutionary dynamics and epidemiology.
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