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Virus Groups 2 1 Group Name Group Strain Type Shape No VIRUS GROUPS 2 1 Group Name Group Strain Type Shape No. of Particles Inclusions Nucleic Acid Vector Features Members in this Handbook AMV Alfalfa mosaic Baciliform 4 + ssRNA Aphid Alfalfa mosaic virus virus (nonpersistent) Bromovirus Brome mosiac Isosahedral 3 + ssRNA Some beetle virus crystalline Carlavirus Carnation Flexous 1 + ssRNA Aphid Narrow Blackberry calico virus latent virus rod various types (nonpersistent) host range Lily symptomless virus Blueberry scorch virus Potato virus M Potato virus S Caulimovirus Cauliflower Isometric 1 + dsDNA Aphid Narrow Blueberry red ringspot mosaic virus (nonpersistent) host range virus Dahlia nosaic virus Strawberry vein-banding virus Closterovirus Beet yellows Filamen- 1 + ssRNA Aphid Beet yellows virus virus tous rod in phloem (semipersistent) Comovirus Cowpea Isometric 2 + ssRNA Beetle Narrow mosaic virus vacuolate and host range crystalloid Cucumovirus Cucumber Isometric 3 + sRNA Aphid Cucumber mosaic virus mosaic virus in mesophyll (nonpersistent), Sap Dianthovirus Carnation Isometric 2 + ssRNA ringspot virus Enamovirus Pea enation Isometric 2 + ssRNA Aphid Pea enation mosaic virus mosaic virus in phloem (persistent) Geminivirus Maize streak Double 1 + ssDNA Beet curly top virus virus particle in phloem Hordeivirus Barley stripe Rod 3 ssRNA Barley stripe mosaic virus mosaic Ideaovirus Raspberry Isometric 3 ssRNA Pollen Raspberry bushy dwarf bushy dwarf virus virus Ilarvirus Tobacco Isometric 3 + ssRNA Pollen, Seed Apple mosaic virus streak virus (transmission Blueberry shock ilarvirus mediated by Prune dwarf virus honeybees) Prunus necrotic ringspot virus Tobacco streak virus Luteovirus Barley Yellow Isometric 1 + ssRNA Aphid Barley yellow dwarf virus Dwarf Virus in phloem (persistent) Bean leaf roll virus Beet western yellows virus Carrot red leaf virus Potato leafroll virus MCDV Maize Isometric 1 ssRNA Chlorotic Dwarf Virus Necrovirus Tobacco Isometric 1 ssRNA Fungus Olpidium brassicae necrosis virus Nepovirus Tobacco Isometric 3 ssRNA Nematode Cherry leafroll virus ringspot virus (Xiphinema, Cherry rasp leaf virus Longidorus), Grapevine fanleaf virus Seed, Pollen Tobacco ringspot virus Tomato ringspot virus Aphid Strawberry mottle virus 3-40 2020 PNW Plant Disease Management Handbook VIRUS GROUPS—CONTINUED 2 1 Group Name Group Strain Type Shape No. of Particles Inclusions Nucleic Acid Vector Features Members in this Handbook Potexvirus Potato virus X Flexous 1 + ssRNA None Narrow Cymbidium mosaic virus rod large-banded (may be fungal) host range Hydrangea ringspot virus or dense bod- Potato virus X ies and paracrystals Aphid Strawberry mild yellow- edge potexvirus Potyvirus Potato virus Y Flexous 1 + ssRNA Aphid Bean common mosaic virus rod conical or (nonpersistent) Bean yellow mosaic virus cylindrical Dasheen mosaic virus (pinwheel) Lettuce mosaic virus Maize dwarf mosaic virus Potato virus A Potato virus Y Tobacco etch virus Tulip breaking virus Zucchini yellow mosaic virus Mite Wheat streak mosaic virus (eriophyid) Reoviridae Wound tumor Isometric 1 + dsRNA virus Rhabdo- Lettuce Bacilliform 1 + ssRNA Aphid, Envelope viridae necrotic (-) Leafhopper yellows virus Sobemovirus Southern bean Isometric 1 ssRNA Beetle Cocksfoot mottle virus mosaic virus Tobamovirus Tobacco Tubular 1 + ssRNA None Mechanical Tobacco mosaic virus mosaic virus rod hexagonal, transmission stacked, or rounded plates Tobravirus Tobacco rattle Rod 2 (+) ssRNA Nematode Wide Tobacco rattle virus virus disappears host range in older infections Tombusvirus Tomato bushy Isometric 1 + ssRNA Unknown, Narrow stunt virus but soilborne natural host range Tospovirus Tomato Isometric 1 + ssRNA Thrips Envelope; Tomato spotted wilt virus spotted wilt wide host Impatiens necrotic spot virus range virus Tymovirus Turnip yellow Isometric 1 + ssRNA Beetle Narrow mosaic virus (leaf-eating) host range 1 Possible EM diagnosis if rod-shaped. 2Possible EM or Light Microscope diagnosis if present and stained correctly. Reference Christie, R.G. and Edwardson, J.R. 1994. Light and Electron Microscopy of Plant Virus Inclusions. Florida Agricultural Experiment Station Mongraph Series, No. 9, rev. 2020 PNW Plant Disease Management Handbook 3-41.
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