Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Alphacryptoviruses: Partitiviridae

Index

• Nomenclature
• Host range, transmission and symptoms
• Physical and biochemical properties
• Taxonomy and relationships
• Illustrations

Nomenclature

ICTV reference

ICTV decimal code 49.0.3.

Definitive species

• Alfalfa 1 alphacryptovirus
• Beet 1 alphacryptovirus
• Beet 2 alphacryptovirus
• Beet 3 alphacryptovirus
• Carnation 1 alphacryptovirus
• Carrot temperate 1 alphacryptovirus
• Carrot temperate 3 alphacryptovirus
• Carrot temperate 4 alphacryptovirus
• Cocksfoot alphacryptovirus
• Hop trefoil 1 alphacryptovirus
• Hop trefoil 3 alphacryptovirus
• Radish yellow edge alphacryptovirus
• Ryegrass alphacryptovirus
• Spinach temperate alphacryptovirus
• Vicia alphacryptovirus
• White clover 1 alphacryptovirus
• White clover 3 alphacryptovirus

Tentative species

• Amaryllis (?) alphacryptovirus
• Avocado 3 (?) alphacryptovirus
• Carnation 2 (?) alphacryptovirus
• Fescue (?) alphacryptovirus
• Garland chrysanthemum temperate (?) alphacryptovirus
• Mibuna temperate (?) alphacryptovirus
• Poinsettia (?) alphacryptovirus
• Red pepper 1 (?) alphacryptovirus
• Red pepper 2 (?) alphacryptovirus
• Rhubarb temperate (?) alphacryptovirus
• Santosai temperate (?) alphacryptovirus
• White mustard (?) alphacryptovirus

Host range and symptoms

Natural host range and symptoms

Symptoms disappear soon after infection (1/5), or none (4/5).

Transmission

Transmitted by means not involving a vector (7/7). Virus transmitted by mechanical inoculation (2/24), or not transmitted by mechanical inoculation (22/24); not transmitted by grafting (14/14); not transmitted by contact between plants (10/10); transmitted by seed (24/24); transmitted by pollen to the seed (6/6).

Experimental host range

Many (>9) families susceptible (1/9), or few (<3) families susceptible (8/9).

Susceptible host species

• Amaryllis (1)
• Beta vulgaris (3)
• Beta vulgaris ssp. cicla (1)
• Brassica campestris ssp. pekinensis var. dentata (1)
• Brassica rapa var. laciniifolia (1)
• Capsicum annuum (2)
• Capsicum frutescens (2)
• Chrysanthemum coronarium (1)
• Dactylis glomerata (1)
• Daucus carota (3)
• Dianthus caryophyllus (2)
• Euphorbia pulcherrima (1)
• Festuca pratensis (1)
• Lolium multiflorum (1)
• Lolium multiflorum × L. perenne (1)
• Lolium perenne (1)
• Medicago lupulina (2)
• Medicago sativa (1)
• Persea americana (1)
• Raphanus sativus (1)
• Rheum rhaponticum (1)
• Sinapis alba (1)
• Spinacia oleracea (1)
• Trifolium repens (2)
• Vicia faba (1)
• Vigna unguiculata (1)

Insusceptible host species

• Brassica campestris ssp. rapa (1/3)
• Chenopodium amaranticolor (3/3)
• Chenopodium capitatum (2/3)
• Chenopodium foetidum (2/3)
• Chenopodium hybridum (2/3)
• Chenopodium murale (2/3)
• Chenopodium quinoa (2/3)
• Cucumis sativus (3/3)
• Gomphrena globosa (2/3)
• Nicotiana clevelandii (2/3)
• Nicotiana glutinosa (2/3)
• Nicotiana tabacum (3/3)
• Petunia × hybrida (2/3)
• Vigna unguiculata ssp. sesquipedalis (3/3)

Families containing susceptible hosts

• Amaryllidaceae (1)
• Caryophyllaceae (2)
• Chenopodiaceae (4)
• Compositae (1)
• Cruciferae (4)
• Euphorbiaceae (1)
• Gramineae (3)
• Lauraceae (1)
• Leguminosae-Papilionoideae (6)
• Polygonaceae (1)
• Solanaceae (2)
• Umbelliferae (3)

Families containing insusceptible hosts

• Amaranthaceae (2/3)
• Chenopodiaceae (3/3)
• Cruciferae (1/3)
• Cucurbitaceae (3/3)
• Leguminosae-Papilionoideae (3/3)
• Solanaceae (3/3)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions (10/10).

Particle morphology

Virions isometric (26/26); not enveloped (22/22); 28-29.85-30 nm in diameter; 30 nm in length; rounded in profile (17/18), or angular in profile (3/18); with a conspicuous capsomere arrangement (2/12), or without a conspicuous capsomere arrangement (10/12).

Physical properties

One sedimenting component in purified preparations (8/8); sedimentation coefficient 118-119.5-120 S. Density 1.337-1.362-1.39 g cm^-3 in CsCl.

Biochemical properties

Genome consists of RNA (19/19); double-stranded (19/19); linear (6/6). Total genome size 2.99-3.986-7.1 kb. Genome of two parts (10/14), or of three parts (4/14); largest (or only) genome part 1.3-2.015-3.9 kb; the 2nd largest 1.25-1.729-3.2 kb; the 3rd largest 1.21-1.33-1.45 kb.

NCBI sequence data (Entrez search)

Features of proteins

Virion protein(s) one (2/4), or two (2/4); M_r 52500-59250-67000. M_r of 2nd largest 53000-57000-61000.

Replication

Replication does not depend on a helper virus (2/2).

Cytopathology

Virions found in cytoplasm (3/3), or in nuclei (1/3). Inclusions present in infected cells (1/3), or absent from infected cells (2/3); are viroplasms (1/1); they contain virions (1/1).

Taxonomy and relationships

Viral family : Partitiviridae.

Illustrations

Electron micrograph.

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Cite this publication as: Brunt, A.A., Crabtree, K., Dallwitz, M.J., Gibbs, A.J., Watson, L. and Zurcher, E.J. (eds.) (1996 onwards). `Plant Viruses Online: Descriptions and Lists from the VIDE Database. Version: 16^th January 1997.' URL http://biology.anu.edu.au/Groups/MES/vide/

Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993) should also be cited.

Please send comments, corrections and suggestions to: vide-manager@biology.anu.edu.au