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<p>In August 2021, begomovirus-like symptoms of yellow mosaic were observed on fiery tasselflower (<i>Emilia coccinea</i>) plants in Iguowan, Nigeria. Total DNA from symptomatic leaves was subjected to rolling-circle amplification and screened using degenerate primers targeting begomovirus DNA-A and DNA-B components, alphasatellites, and betasatellites. Subsequently, the complete nucleotide sequence of a monopartite begomovirus genome of 2802 nucleotides (nt) was determined. The novel virus, which we have named "tasselflower yellow mosaic virus" (TFYMV), was found to be associated with tomato leaf curl Cameroon alphasatellite (1,390 nt) and a novel 1271 nt betasatellite. The species names "<i>Begomovirus emiliaflavi</i>" and "<i>Betasatellite emiliae</i>" are proposed for TFYMV and the betasatellite, respectively.</p>

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Molecular characterization of a novel begomovirus-satellite complex infecting fiery tasselflower (Emilia coccinea) in Nigeria

  • 期刊论文

  • 发表日期：

    2025年11月21日

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  • John O. Oladokun,
  • Olawale Arogundade,
  • P. Lava Kumar,
  • Mohammed L. Attanda,
  • Olufemi J. Alabi

摘要

In August 2021, begomovirus-like symptoms of yellow mosaic were observed on fiery tasselflower (Emilia coccinea) plants in Iguowan, Nigeria. Total DNA from symptomatic leaves was subjected to rolling-circle amplification and screened using degenerate primers targeting begomovirus DNA-A and DNA-B components, alphasatellites, and betasatellites. Subsequently, the complete nucleotide sequence of a monopartite begomovirus genome of 2802 nucleotides (nt) was determined. The novel virus, which we have named "tasselflower yellow mosaic virus" (TFYMV), was found to be associated with tomato leaf curl Cameroon alphasatellite (1,390 nt) and a novel 1271 nt betasatellite. The species names "Begomovirus emiliaflavi" and "Betasatellite emiliae" are proposed for TFYMV and the betasatellite, respectively.