Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Necroviruses

Index

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

Nomenclature

ICTV reference

ICTV decimal code 44.0.1.

Definitive species

• Tobacco necrosis necrovirus

Tentative species

• Carnation yellow stripe (?) necrovirus
• Lisianthus necrosis (?) necrovirus

Host range and symptoms

Natural host range and symptoms

Symptoms persist (2/2).

Transmission

Transmitted by a vector (2/2); a fungus (2/2); Chytridiales (2/2). Virus transmitted by mechanical inoculation; not transmitted by seed (1/1); not transmitted by pollen (1/1).

Experimental host range

Many (>9) families susceptible (2), or several (3-9) families susceptible (1).

Susceptible host species

• Amaranthus caudatus (1)
• Antirrhinum majus (1)
• Arachis hypogaea (1)
• Avena sativa (1)
• Beta vulgaris (1)
• Brassica campestris ssp. rapa (1)
• Brassica oleracea var. capitata (1)
• Capsicum frutescens (1)
• Catharanthus roseus (1)
• Chenopodium album (2)
• Chenopodium amaranticolor
• Chenopodium ambrosioides (1)
• Chenopodium quinoa
• Cichorium endiva (1)
• Clarkia amoena (1)
• Cucumis melo (1)
• Cucumis sativus (2)
• Cucurbita maxima (2)
• Cucurbita moschata (1)
• Cucurbita pepo (2)
• Cyamopsis tetragonoloba (1)
• Datura stramonium (1)
• Dianthus barbatus (1)
• Dianthus caryophyllus (1)
• Eustoma russellianum (1)
• Fragaria vesca (1)
• Glycine max (1)
• Gomphrena globosa
• Gypsophila elegans (1)
• Helianthus annuus (1)
• Hordeum vulgare (1)
• Hyoscyamus niger (1)
• Lactuca sativa (1)
• Lathyrus odoratus (1)
• Lupinus albus (1)
• Lycopersicon esculentum (1)
• Nicandra physalodes (1)
• Nicotiana clevelandii
• Nicotiana glutinosa (2)
• Nicotiana rustica (1)
• Nicotiana sylvestris (1)
• Nicotiana tabacum (2)
• Petunia × hybrida (1)
• Phaseolus vulgaris (2)
• Pisum sativum (1)
• Ricinus communis (1)
• Saponaria vaccaria (1)
• Sesamum indicum (1)
• Sinningia speciosa (1)
• Solanum nodiflorum (1)
• Sonchus oleraceus (1)
• Spinacia oleracea (1)
• Tetragonia tetragonioides (2)
• Trifolium incarnatum (1)
• Trifolium pratense (1)
• Trifolium repens (1)
• Triticum aestivum (1)
• Tulipa gesneriana (1)
• Vicia faba (1)
• Vigna radiata (1)
• Vigna unguiculata
• Vigna unguiculata ssp. sesquipedalis (1)
• Zea mays (1)
• Zinnia elegans (2)

Insusceptible host species

• Avena sativa (1)
• Brassica campestris ssp. rapa (1)
• Calendula officinalis (1)
• Capsicum annuum (1)
• Cucumis sativus (1)
• Cucurbita pepo (1)
• Daucus carota (1)
• Dianthus barbatus (2)
• Dianthus caryophyllus (1)
• Euphorbia marginata (1)
• Hordeum vulgare (1)
• Ipomoea setosa (1)
• Lycopersicon esculentum (1)
• Medicago sativa (1)
• Myosotis sylvatica (1)
• Nicotiana benthamiana (1)
• Nicotiana debneyi (1)
• Nicotiana rustica (1)
• Physalis peruviana (1)
• Raphanus sativus (1)
• Secale cereale (1)
• Solanum melongena (1)
• Triticum durum (1)
• Tropaeolum majus (1)
• Vicia faba (1)
• Vigna radiata (1)
• Zea mays (1)

Families containing susceptible hosts

• Amaranthaceae
• Apocynaceae (1)
• Caryophyllaceae (2)
• Chenopodiaceae
• Compositae (2)
• Cruciferae (1)
• Cucurbitaceae (2)
• Euphorbiaceae (1)
• Gentianaceae (1)
• Gesneriaceae (1)
• Gramineae (1)
• Leguminosae-Papilionoideae
• Liliaceae (1)
• Onagraceae (1)
• Pedaliaceae (1)
• Rosaceae (1)
• Scrophulariaceae (1)
• Solanaceae
• Tetragoniaceae (2)

Families containing insusceptible hosts

• Boraginaceae (1)
• Caryophyllaceae
• Compositae (1)
• Convolvulaceae (1)
• Cruciferae (2)
• Cucurbitaceae (1)
• Euphorbiaceae (1)
• Gramineae (2)
• Leguminosae-Papilionoideae (2)
• Solanaceae
• Tropaeolaceae (1)
• Umbelliferae (1)

Physical and biochemical properties

Properties of particles in sap

TIP: 80-87.5-95 °C. LIV: 7-46.83-63 days. DEP: log₁₀ minus 4 (1), or 7 (1), or 9-10 (1). Leaf sap contains few virions (1/2), or contains many virions (1/2).

Particle morphology

Virions isometric; not enveloped (2/2); 26-28.66-30 nm in diameter; rounded in profile (1/2), or angular in profile (1/2); without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 99-118.6-136 S. Density 1.333-1.367-1.399 g cm^-3 in CsCl. Isoelectric point pH 4.5. A₂₆₀/A₂₈₀ ratio 1.61.

Biochemical properties

Virions contain 18-18.5-19 % nucleic acid; 72-76.5-81 % protein; 0 % lipid.

Genome consists of RNA; single-stranded; linear (1/1). Total genome size 3.759-3.981-4.185 kb. Genome unipartite (2/2); largest (or only) genome part 3.759-3.879-4 kb. Base composition 24 % G; 27.5 % A; 22.5 % C; 25.5 % U. 5´ terminus of RNA has an unusual type (1/1). Infectivity retained when deproteinised with phenol or detergent (1/1). Poly A region absent (1/1).

NCBI sequence data (Entrez search)

Features of the genome

Non-genomic nucleic acid not found in the virions (1/1). Sub-genomic mRNA found in infected cells (1/1).

Features of proteins

Virion protein(s) one; M_r 27000-30830-35500.

Replication

Replication does not depend on a helper virus (1/1).

Cytopathology

Virions found in cytoplasm (2/2). Inclusions present in infected cells (2/2); are crystals in the cytoplasm (2/2), or membranous bodies (1/2), or unusual in shape (1/2); they contain virions (1/2), or they do not contain virions (1/2).

Taxonomy and relationships

No data available.

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: 20^th August 1996.' 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