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Tomato Chlorotic Spot Virus (TCSV) Putatively Incorporated a Genomic Segment of Groundnut Ringspot Virus (GRSV) Upon a Reassortment Event

1
Department of Cell Biology, Institute of Biological Sciences, University of Brasília (UnB), Brasília 70910-900, Brazil
2
Laboratory of Virology, Wageningen University (WUR), Wageningen 6708 PB, The Netherlands
*
Author to whom correspondence should be addressed.
Authors equally contributed to this work.
Viruses 2019, 11(2), 187; https://doi.org/10.3390/v11020187
Received: 17 January 2019 / Revised: 14 February 2019 / Accepted: 21 February 2019 / Published: 22 February 2019
(This article belongs to the Special Issue Plant Virus Ecology and Biodiversity)
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Abstract

Tomato chlorotic spot virus (TCSV) and groundnut ringspot virus (GRSV) share several genetic and biological traits. Both of them belong to the genus Tospovirus (family Peribunyaviridae), which is composed by viruses with tripartite RNA genome that infect plants and are transmitted by thrips (order Thysanoptera). Previous studies have suggested several reassortment events between these two viruses, and some speculated that they may share one of their genomic segments. To better understand the intimate evolutionary history of these two viruses, we sequenced the genomes of the first TCSV and GRSV isolates ever reported. Our analyses show that TCSV and GRSV isolates indeed share one of their genomic segments, suggesting that one of those viruses may have emerged upon a reassortment event. Based on a series of phylogenetic and nucleotide diversity analyses, we conclude that the parental genotype of the M segment of TCSV was either eliminated due to a reassortment with GRSV or it still remains to be identified. View Full-Text
Keywords: tospovirus; tomato chlorotic spot virus; groundnut ringspot virus; virus evolution; reassortment tospovirus; tomato chlorotic spot virus; groundnut ringspot virus; virus evolution; reassortment
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Silva, J.M.F.; de Oliveira, A.S.; de Almeida, M.M.S.; Kormelink, R.; Nagata, T.; Resende, R.O. Tomato Chlorotic Spot Virus (TCSV) Putatively Incorporated a Genomic Segment of Groundnut Ringspot Virus (GRSV) Upon a Reassortment Event. Viruses 2019, 11, 187.

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