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<p>The corn leafhopper <i>Dalbulus maidis</i> (DeLong &amp; Wolcott) (Hemiptera: Cicadellidae) is a major pest of corn in the Americas, transmitting pathogens that cause corn stunt disease. Using high-throughput sequencing and PCR-based assays, we identified and characterized two novel large-genome pestiviruses (LGPs), chicharrita del maiz pestivirus 1 (ChMPV1) and 2 (ChMPV2), from <i>D. maidis</i> populations collected in Texas, Oklahoma, Missouri, and Iowa. Genome analysis revealed long polyproteins with conserved "<i>Pestiviridae</i>" domains, and virus incidence varied geographically (0–43%). Phylogenetic analysis placed both viruses within the newly proposed family "<i>Pestiviridae</i>". These findings expand the known insect virome and provide tools for future studies on insect virus–vector–plant pathogen interactions.</p>

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Molecular characterization and geographic incidence of two pestiviruses infecting the corn leafhopper (Dalbulus maidis) in the United States

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Juliana Osse de Souza,
  • Hia Kalita,
  • Carter Casey,
  • Adriana Larrea-Sarmiento,
  • Jose Gonzalez-Acuña,
  • Daren S. Mueller,
  • Adam J. Sisson,
  • Olufemi J. Alabi,
  • Maira Duffeck,
  • Ashleigh M. Faris,
  • Ivair Valmorbida,
  • Alejandro Olmedo-Velarde

摘要

The corn leafhopper Dalbulus maidis (DeLong & Wolcott) (Hemiptera: Cicadellidae) is a major pest of corn in the Americas, transmitting pathogens that cause corn stunt disease. Using high-throughput sequencing and PCR-based assays, we identified and characterized two novel large-genome pestiviruses (LGPs), chicharrita del maiz pestivirus 1 (ChMPV1) and 2 (ChMPV2), from D. maidis populations collected in Texas, Oklahoma, Missouri, and Iowa. Genome analysis revealed long polyproteins with conserved "Pestiviridae" domains, and virus incidence varied geographically (0–43%). Phylogenetic analysis placed both viruses within the newly proposed family "Pestiviridae". These findings expand the known insect virome and provide tools for future studies on insect virus–vector–plant pathogen interactions.