Abstract
Two novel tomato-infecting begomoviruses were discovered via high-throughput sequencing in Brazil. Both viruses were also Sanger-sequenced and displayed DNA–A components phylogenetically related to New World bipartite begomoviruses. The names tomato golden net virus (ToGNV) and tomato yellow net virus (ToYNV) were proposed. The majority of the New World begomoviruses has bipartite genomes. However, extensive analyses revealed that ToGNV and ToYNV have monopartite genomes, because no cognate DNA–B components were detected. Hence, they may comprise a unique group of monopartite New World begomoviruses, which have enormous biological, molecular, and plant breeding interest.
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This research was supported by grants, scholarships, and post-doc fellowships from Embrapa, FAP–DF, CAPES, and CNPq.
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This research was supported by grants, scholarships, and fellowships from Embrapa, FAP-DF, and CNPq. This study was also financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brazil (CAPES) – Finance Code 001.
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Conceptualization, L.N.A.R, M.E.N.F, L.S.B, M.R.R, R.L.G, and R.C.P.C; Data curation, L.N.A.R, L.S.B and R.C.P.C; Formal analysis, L.N.A.R and R.C.P.C; Investigation, L.N.A.R, M.E.N.F, L.S.B, M.R.R, R.L.G; Project administration, M.E.N.F, L.S.B, M.R.R, R.L.G, and R.C.P.C; Supervision, R.L.G, L.S.B, and R.C.P.C; Fig. 1, L.N.A.R and R.C.P.C, Supplementary table 1 L.N.A.R; Writing-original draft, L.N.A.R, L.S.B, R.L.G and R.C.P.C. All authors reviewed the manuscript.
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Genomic organization of the two putatively new tomato–infecting monopartite Begomovirus species from Neotropical areas of Brazil. Panel A: Diagrammatic representation of the circular genomes of tomato golden net virus (ToGNV) and tomato yellow net virus (ToYNV) and their respective open reading frames (ORFs). The ORFs V1, C1, C2, C3, and C4 are color–coded according to the presumed function of their coding proteins/genomic segments; CP = capsid protein; Rep = replication–associated protein; TrAp = transactivator protein; Ren = replication enhancer; sd = probable symptom determinant; ss = probable silencing suppressor; IR = intergenic region (orange box), encompassing the hairpin and recombination region. Panel B: A segment of the IR showing iterons, TATA region, nonanucleotide, and the stem–loop at the Rep terminus = IRD (Rep Iteron–Related Domain)
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dos Reis, L.d.N.A., Boiteux, L.S., Fonseca, M.E.N. et al. Tomato golden net virus and tomato yellow net virus: two novel New World begomoviruses with monopartite genomes. Arch Virol 168, 235 (2023). https://doi.org/10.1007/s00705-023-05836-0
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DOI: https://doi.org/10.1007/s00705-023-05836-0