Potexviruses (Tymovirales: Alphaflexiviridae, Potexvirus) and their significance for the South of the Russian Far East

Aim. Systematisation of modern data on phytoviruses from the genus Potexvirus (Tymovirales: Alphaflexiviridae) including their relevance for the South of the Russian Far East.
The paper describes the early (during the first half of the XX century) identification history, taxonomic configuration, species composition (including valid binary names for all 53 viruses known to date), virion morphology, genome structure and expression scheme of members of Potexvirus. The biological properties of eight potexvirus strains described in the South of the Russian Far East and stored in the collection of the Laboratory of Virology in the Federal Scientific Centre for Terrestrial Biodiversity of East Asia, Far Eastern Branch, Russian Academy of Sciences: Potato virus X (PVX), Hydrangea ringspot virus (HRSV), Cymbidium mosaic virus (CyMV), Lily virus X (LiVX), Plantago asiatica mosaic virus (PlaMV), White clover mosaic virus (WClMV), Potato aucuba mosaic virus (PAMV), Hosta virus X (HoVX) have been analysed in detail.
The high level of activity of 8 viruses from Potexvirus requires a high level of vigilance on the part of the services ensuring the biological security of the state, as well as mandatory consideration when developing scientifically‐based measures to ensure the food security of the Russian Far East.

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