Global genetic diversity of Tobacco ringspot virus including newly reported isolates from cotton (Gossypium hirsutum L.) in Oklahoma.

Cotton is one of the most salient cash crops globally and in the United States (US). Lately, several virus-like diseases have been reported from cotton in the US such as the Tobacco ringspot virus (TRSV) in Oklahoma. TRSV has been reported from various hosts worldwide with minimal phylogenetic examination. In this study, complete genome sequences of four TRSV isolates from cotton were isolated, and the genetic diversity was investigated along with additional available TRSV isolates retrieved from GenBank. Phylogenetic analysis based on the complete RNA1 and RNA2 sequences distributed all TRSV isolates into three major phylogenetic clades exhibiting a differential clade composition depending on the segment. The TRSV cotton isolates exhibited differential grouping between the RNA1 and RNA2 analyses. Additionally, monophyletic subclades of isolates appeared to be conserved between both segments. Thirty-five recombination events in RNA1 and twenty-three in RNA2 were identified with implications in the variation of the phylogenetic analyses. Furthermore, multiple hypotheses of TRSV evolution were generated based on the phylogenetic analyses, but to test them, more complete genomes of TRSV will be needed. This study provides the first complete genome analysis of TRSV isolates infecting cotton in the US and a detailed analysis of global TRSV isolates.

• Publication year

  2023

• Venue

  Plant Disease

• Publication date

  2023-09-29

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.1094/PDIS-07-23-1251-REPMID 37773330
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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