Abstract
Tomato necrotic ringspot virus (TNRV) was first reported in Thailand in 2011, where it continues to reduce the yield and quality of pepper and tomato crops. Here, we report the complete genome sequence of TNRV isolate chilli-CR derived from next-generation sequencing. The TNRV genome comprises 16,595 nucleotides (nt) on three RNA segments. The L RNA is 8,858 nt, the M RNA is 4,724 nt, and the S RNA is 3,013 nt in length. The genome structure and organization are typical of orthotospoviruses, encoding five proteins, named L, NSm, GNGC, NSs, and N. Pairwise comparison of each genomic RNA segment and its deduced amino acid (aa) sequence showed that TNRV chilli-CR shares 73.6-82.3% nt sequence identity and 81.1-91.9% aa sequence identity with pepper chlorotic spot virus (PCSV). Similar phylogenetic groupings were observed based on each genomic RNA or deduced aa sequence, and with concatenated genomic RNA sequences. The clustering of TNRV and PCSV in all phylogenetic analyses, and the 78.9% overall nt sequence identity observed using the concatenated genomic RNAs suggest that TNRV is a distinct orthotospovirus and that analysis of concatenated orthotospovirus genome sequences will be of value in future phylogenetic studies of this virus group.
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