Molecular characterization of a new emaravirus infecting Clerodendrum thomsoniae plants.

Vinicius Henrique Bello; Pedro Luis Ramos-Gonz&#xe1;lez; Gianluca L Michea Gonzalez; Fernanda de P&#xe1;dua Del Corona; Jorge Alberto Marques Rezende; Elliot Watanabe Kitajima

doi:10.1007/s00705-026-06734-x

PubMed · 42700307

Molecular characterization of a new emaravirus infecting Clerodendrum thomsoniae plants.

Vinicius Henrique Bello·Pedro Luis Ramos-González·Gianluca L Michea Gonzalez·Fernanda de Pádua Del Corona·Jorge Alberto Marques Rezende·Elliot Watanabe Kitajima

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Abstract

High-throughput sequencing revealed a new emaravirus named clerodendrum yellow blotch virus (ClYBV), infecting Clerodendrum thomsoniae plants in São Paulo State, Brazil. Four genomic RNA segments (RNA1, RNA3, RNA4, and RNA5) were recovered, whereas RNA2 remained undetected. Phylogenetic analysis and pairwise comparisons based on amino acid sequences showed ClYBV is most closely related to redbud yellow ringspot-associated virus (RYRaV, Emaravirus cercidis). No ClYBV particles were observed by transmission electron microscopy in leaf tissues from infected plants. These results support the identification of ClYBV as a new Emaravirus member, though the undetectable RNA2 suggests the isolate may be defective, lacking this segment and unable to produce virus particles. The binomial species name "Emaravirus clerodendri" is proposed.

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Phylogeny Clerodendrum Brazil Genome, Viral RNA, Viral Plant Diseases RNA Viruses Plant Leaves High-Throughput Nucleotide Sequencing Journal Article

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Vinicius Henrique Bello, Pedro Luis Ramos-González, Gianluca L Michea Gonzalez, Fernanda de Pádua Del Corona, Jorge Alberto Marques Rezende, Elliot Watanabe Kitajima. 2026-09-05. Molecular characterization of a new emaravirus infecting Clerodendrum thomsoniae plants.. https://doi.org/10.1007/s00705-026-06734-x

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