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Genomic characterization of a new torradovirus from common fleabane (Erigeron annuus)

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Abstract

A new virus was detected in common fleabane (Erigeron annuus) showing virus-like symptoms including leaf yellowing, mosaic, and mottling. This virus is tentatively named "fleabane yellow mosaic virus" (FbYMV). The complete genome sequence consists of two RNA segments of 7,133 nt (RNA 1) and 4,810 nt (RNA 2), excluding the poly(A) tract. Sequence analysis showed a genome organization comparable to that of members of the genus Torradovirus. The level of sequence identity between FbYMV and known members of the genus Torradovirus was below the cutoff established by the ICTV for species demarcation. Therefore, FbYMV should be classified as a new member of the genus Torradovirus.

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Acknowledgements

This work was funded by the USDA ARS National Plant Disease Recovery System. Robert Alvarez-Quinto is supported by the Republic of Ecuador through the Ecuadorean Science and Technology Secretariat (SENESCYT).

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Authors and Affiliations

  1. Department of Botany and Plant Pathology, 4575 Research Way Lab, Corvallis, OR, 97333, USA

    Robert Alvarez-Quinto

  2. National Germplasm Resources Laboratory, USDA-ARS, Beltsville, MD, 20705, USA

    Samuel Grinstead & Stephen Bolus

  3. Section of Plant Pathology and Plant-Microbe Biology, Cornell University, Riverhead, NY, 11901, USA

    Margery Daughtrey

  4. USDA ARS Floral and Nursery Plants Research Unit, Beltsville, MD, 20705, USA

    John Hammond

  5. USDA ARS Crop Improvement and Protection Research Unit, Salinas, CA, 93905, USA

    William Wintermantel

  6. USDA ARS Horticultural Crops Disease and Pest Management Research Unit, Corvallis, OR, 97330, USA

    Dimitre Mollov

Authors
  1. Robert Alvarez-Quinto
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  2. Samuel Grinstead
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  3. Stephen Bolus
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  4. Margery Daughtrey
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  5. John Hammond
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  6. William Wintermantel
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  7. Dimitre Mollov
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Contributions

All authors have read and agreed to the published version of the manuscript. Conceptualization: Dimitre Mollov, John Hammond, William Wintermantel. Methodology: Robert Alvarez, Samuel C. Grinstead, Stephen Bolus, Dimitre Mollov. Formal analysis and investigation: Robert Alvarez, Samuel C. Grinstead, Stephen Bolus. Writing – original draft preparation: Robert Alvarez, Dimitre Mollov. Writing – review and editing: Robert Alvarez-Quinto, Samuel Grinstead, Stephen Bolus, Margery Daughtrey, John Hammond, William Wintermantel, Dimitre Mollov. Resources: Dimitre Mollov, Margery Daughtrey, John Hammond. Supervision: Dimitre Mollov.

Corresponding author

Correspondence to Dimitre Mollov.

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All authors declare no conflict of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Handling Editor: Sead Sabanadzovic.

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Supplementary Information

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Supplementary Fig. S1

Symptoms observed in common fleabane, includingmosaic, yellowing, and mottling. (A) Common fleabane plant growingoutdoors with symptoms associated with FbYMV infection. (B) Close-upphotograph of a fleabane seedling infected with FbYMV infection. Supplementary file1 (JPG 1042 kb)

Supplementary Fig. S2

Maximum-likelihood (ML) consensus treeconstructed based on the combined amino acid sequences of the CPs (RNA2). The bootstrap value (1000 replicates) is indicated at each branch; thesupport threshold for the consensus tree was set at 70%. The tree is drawn toscale, with branch lengths corresponding to the number of substitutions persite. The position of FbYMV is indicated by a red arrow. Red circles at theend of the taxon names indicate torradoviruses of tomato origin, while bluesquares indicate torradoviruses originating from hosts other than tomato. Supplementary file1 (JPG 1020 kb)

Supplementary file1 (TXT 12 kb)

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Alvarez-Quinto, R., Grinstead, S., Bolus, S. et al. Genomic characterization of a new torradovirus from common fleabane (Erigeron annuus). Arch Virol 167, 1905–1908 (2022). https://doi.org/10.1007/s00705-022-05497-5

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  • DOI: https://doi.org/10.1007/s00705-022-05497-5

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