Abstract
Kitaviruses are plant-infecting, non-systemic disease-causing viruses with multipartite single-stranded RNA genomes. Despite their importance, knowledge on kitaviruses is limited in comparison with other plant virus groups, mainly because of the lesser number of identified and characterized kitaviruses and their isolates. In the present study, we explored plant (meta)transcriptome data available in public domain and identified genome sequences of eighteen putative novel blunerviruses in eighteen plant species, including four gymnosperm and four monocot species. Four RNA segments (RNAs 1-4) of eleven identified viruses were recovered, whilst at least two RNA segments were recovered for the remaining viruses. Phylogenetic analysis grouped the identified viruses with known blunerviruses. Based on genome organization, sequence identities of encoded proteins with known blunerviruses and phylogeny, the identified viruses are regarded as new members of the genus Blunervirus. The study paves way for initiating further studies on understanding biological properties, economic importance and geographical distribution of identified blunerviruses.
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