ICTV Virus Taxonomy Profile: Potyviridae 2022

Abstract

The family Potyviridae includes plant viruses with single-stranded, positive-sense RNA genomes of 8–11 kb and flexuous filamentous particles 650–950 nm long and 11–20 nm wide. Genera in the family are distinguished by the host range, genomic features and phylogeny of the member viruses. Most genomes are monopartite, but those of members of the genus Bymovirus are bipartite. Some members cause serious disease epidemics in cultivated plants. This is a summary of the International Committee on Taxonomy of Viruses (ICTV) Report on the family Potyviridae, which is available at ictv.global/report/potyviridae.

First report of sunflower chlorotic mottle virus infecting sunflower plants in Brazil

“…Based on the species demarcation threshold for Potyviridae members, potyviruses of the same species share more than 76 % nucleotide and 82 % amino acid identities of the complete ORF or similar criteria can be used for the CP coding region if the complete ORF sequence is not available (Inoue-Nagata et al, 2022). The nucleotide sequences obtained in the present work confirmed the presence of SuCMoV in field symptomatic sunflower plants.…”

“…Potyviruses (genus Potyvirus, family Potyviridae) are one of the largest groups of plant RNA viruses that affect various crops worldwide. The particles are flexuous and filamentous, 680-900 nm long and 11-20 nm wide, and can be found in the cytoplasm and leaf parenchyma cells (Inoue-Nagata et al, 2022). They have a single-stranded, positive-sense RNA genome with approximately 10,000 nucleotides containing a long open reading frame (ORF) (Inoue-Nagata et al, 2022).…”

“…The particles are flexuous and filamentous, 680-900 nm long and 11-20 nm wide, and can be found in the cytoplasm and leaf parenchyma cells (Inoue-Nagata et al, 2022). They have a single-stranded, positive-sense RNA genome with approximately 10,000 nucleotides containing a long open reading frame (ORF) (Inoue-Nagata et al, 2022). Aphids transmit potyviruses in a non-persistent relationship, with Myzus persicae and Aphis gossypii being the most important vectors (Gadhave et al, 2020).…”

AlkB RNA demethylase homologues and N6‐methyladenosine are involved in Potyvirus infection

“…NCBI database searches using these sequences additionally identified LC631971 and LC631972, genomes obtained in Australia and annotated as endive yellows virus. Pairwise comparisons of polyproteins and coding sequences show that isolates from Germany and Australia share (i) high identity with each other (nucleotide sequences: 83.2%–99.9%; amino acid sequences: 91.9%–100.0%), indicating they belong to a single species, and (ii) identity values of only 70.9%–71.6% (nucleotide sequences) and 77.6%–77.8% (amino acid sequences) with the French isolate (Tables 1 and 2), which are below the family's species demarcation thresholds (nucleotide sequences: 76%; amino acid sequences: 82%) (Inoue‐Nagata et al, 2022). We thus refer here to KU941946 as French endive necrotic mosaic virus (FENMV), member of a putative new species within the Potyvirus genus.…”

The recombinogenic history of turnip mosaic potyvirus reveals its introduction to Japan in the 19th century

“…Potyvirus is the largest genus of Potyviridae , the largest family of plant RNA viruses ( Gibbs and Ohshima 2010 ; Gibbs et al. 2020 ; Inoue-Nagata, Jordan, and Kreuze et al. 2022 ).…”