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ARS Home » Northeast Area » Washington, D.C. » National Arboretum » Floral and Nursery Plants Research » Research » Publications at this Location » Publication #388598
Research Project: Detection, Identification, and Characterization of New and Emerging Viral and Bacterial Diseases of Ornamental Plants

Location: Floral and Nursery Plants Research

Title: Create five new species in the genus Potyvirus (Patatavirales: Potyviridae)

Author
item INOUE-NAGATA, ALICE KAZUKO - Brazilian Agricultural Research Corporation (EMBRAPA)
item WYLIE, STEPHEN - Murdoch University
item Jordan, Ramon
item KREUZE, JAN - International Potato Center
item LI, FAN - Yunnan Agricultural University
item LOPEZ-MAYO, JUAN JOSE - Center For Research In Agricultural Genomics (CRAG)
item MAKINEN, KRISTINA - University Of Helsinki
item OHSHIMA, KAZUSATO - Saga University

Submitted to: Electronic Publication
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 2/23/2022
Publication Date: 5/27/2022
Citation: Inoue-Nagata, A., Wylie, S., Jordan, R.L., Kreuze, J., Li, F., Lopez-Mayo, J., Makinen, K., Ohshima, K. 2022. Create five new species in the genus Potyvirus (Patatavirales: Potyviridae). Electronic Publication. https://doi.org/eletronic.publication.

Interpretive Summary: Viruses are named and classified by characteristics such the size and shape of the virus, nucleic acid size and type (DNA or RNA), genome organization, mode of replication, host(s), and the type of disease they cause. Naming new viruses or changing the taxonomic classification requires layers of review and formal approval by the International Committee on the Taxonomy of Viruses (ICTV), which develops, refines, and maintains a universal taxonomy of viruses. In this publication, a team of scientists proposes the creation of five new species in the genus Potyvirus, and the abolishment of three other species. This genus is the largest in its family, with over 190 species, many of which cause serious disease epidemics in cultivated plants worldwide. This information will be utilized by virologists and regulatory officials worldwide to ensure that viruses can be correctly identified, and their relationships to other viruses can be understood.

Technical Abstract: The family Potyviridae includes plant viruses with single-stranded, positive-sense RNA genomes of 8–11 kb and flexuous filamentous particles 680–900'nm long and 11–20'nm wide. Genera are distinguished by the host range, genomic features and phylogeny of the member viruses. The largest genus, Potyvirus, has over 190 species, with many members that cause serious disease epidemics in cultivated plants worldwide. The Potyviridae Study Group proposes the creation of five new species in the Genus Potyvirus, and the abolishment of three species. The new species are named according to the binomial rule: Potyvirus achyrantis, Potyvirus ashitabae, Potyvirus mirabilis, Potyvirus fountaingrassi, and Potyvirus pleioblasti. There is sufficient molecular and phylogenetic support showing that these five new viruses met the species demarcation criteria for inclusion in the genus Potyvirus, family Potyviridae. The following species were abolished from the Potyviridae species list until they can be assigned to an existing genus: Common reed chlorotic stripe virus, Longan witches broom-associated virus, and Spartina mottle virus. The Study Group will continue to analyze all Potyviridae-related sequences, and, if appropriate, will create new genera for classification of all accepted species.