Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Nanaviruses

Index

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

Nomenclature

ICTV reference

ICTV decimal code 79.0.P.1.

Definitive species

• Banana bunchy top nanavirus
• Coconut foliar decay nanavirus
• Faba bean necrotic yellows nanavirus
• Milk vetch dwarf nanavirus
• Subterranean clover stunt nanavirus

Host range and symptoms

Natural host range and symptoms

Symptoms persist (4/4).

Transmission

Transmitted by a vector; an insect; Aphididae (4), or an unusual insect group (1). Transmitted in a semi-persistent manner (1), or in a persistent manner. Virus retained when the vector moults (4/4); does not multiply in the vector (1/1); not transmitted congenitally to the progeny of the vector (2/2); not transmitted by mechanical inoculation; transmitted by grafting (2/3), or not transmitted by grafting (1/3); not transmitted by contact between plants (2/2); not transmitted by seed (2/2); not transmitted by pollen (2/2).

Experimental host range

Few (<3) families susceptible (4/4).

Susceptible host species

• Arachis hypogaea (2)
• Astragalus sinicus (2)
• Cassia tora (1)
• Cicer arietinum (1)
• Cocos nucifera (1)
• Crotalaria intermedia (1)
• Crotalaria spectabilis (2)
• Datura stramonium (1)
• Desmodium intortum (1)
• Glycine max (1)
• Lablab purpureus (1)
• Lathyrus odoratus (2)
• Lens culinaris (2)
• Macroptilium lathyroides (1)
• Macrotyloma uniflorum (1)
• Medicago (1)
• Medicago arabica (1)
• Medicago hispida (2)
• Medicago hispida var. denticulata (1)
• Medicago lupulina (1)
• Medicago minima (1)
• Medicago orbicularis (1)
• Medicago polymorpha (1)
• Medicago sativa (2)
• Medicago scutellata (1)
• Melilotus albus (2)
• Melilotus indicus (1)
• Melilotus officinalis (1)
• Musa (1)
• Musa sapientum (1)
• Nicotiana glutinosa (1)
• Nicotiana rustica (1)
• Nicotiana tabacum (1)
• Onobrychis biebersteinii (1)
• Onobrychis viciifolia (1)
• Phaseolus vulgaris (3)
• Pisum sativum (3)
• Spinacia oleracea (1)
• Trifolium (1)
• Trifolium cernuum (1)
• Trifolium dubium (1)
• Trifolium glomeratum (1)
• Trifolium incarnatum (3)
• Trifolium pannonicum (1)
• Trifolium pratense (1)
• Trifolium repens (1)
• Trifolium subterraneum (3)
• Trigonella procumbens (1)
• Vicia faba (3)
• Vicia palaestina (1)
• Vicia sativa (3)
• Vicia villosa (1)
• Vigna angularis (1)
• Vigna unguiculata (2)
• Vigna unguiculata ssp. sesquipedalis (1)
• Wisteria sinensis (1)

Insusceptible host species

• Antirrhinum majus (1/3)
• Arachis hypogaea (1/3)
• Beta vulgaris (2/3)
• Brassica campestris ssp. napus (2/3)
• Capsella bursa-pastoris (2/3)
• Chenopodium amaranticolor (1/3)
• Cicer arietinum (1/3)
• Crambe abyssinica (1/3)
• Cucumis sativus (2/3)
• Cucurbita pepo (1/3)
• Datura stramonium (1/3)
• Erodium moschatum (1/3)
• Glycine max (2/3)
• Gomphrena globosa (2/3)
• Lactuca sativa (1/3)
• Lathyrus odoratus (1/3)
• Linum usitatissimum (1/3)
• Lupinus albus (1/3)
• Lycopersicon esculentum (2/3)
• Medicago sativa (2/3)
• Melilotus albus (2/3)
• Ocimum basilicum (1/3)
• Petunia × hybrida (1/3)
• Senecio vulgaris (1/3)
• Spinacia oleracea (1/3)
• Stellaria media (1/3)
• Tetragonia tetragonioides (2/3)
• Trifolium hybridum (3/3)
• Trifolium pratense (3/3)
• Trifolium repens (2/3)
• Vicia villosa (1/3)
• Vigna unguiculata (1/3)
• Vitis rupestris (1/3)

Families containing susceptible hosts

• Chenopodiaceae (1)
• Leguminosae-Caesalpinioideae (1)
• Leguminosae-Papilionoideae (3)
• Musaceae (1)
• Palmae (1)
• Solanaceae (1)

Families containing insusceptible hosts

• Amaranthaceae (2/3)
• Caryophyllaceae (1/3)
• Chenopodiaceae (3/3)
• Compositae (1/3)
• Cruciferae (2/3)
• Cucurbitaceae (2/3)
• Geraniaceae (1/3)
• Labiatae (1/3)
• Leguminosae-Papilionoideae (3/3)
• Linaceae (1/3)
• Scrophulariaceae (1/3)
• Solanaceae (3/3)
• Tetragoniaceae (2/3)
• Vitidaceae (1/3)

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains few virions (3/4), or contains many virions (1/4).

Particle morphology

Virions isometric; not enveloped (4/4); 17-20.2-26 nm in diameter; rounded in profile (1), or angular in profile (4); without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations (2/2). Density 1.34 g cm^-3 in CsCl. A₂₆₀/A₂₈₀ ratio 1.35-1.375-1.4.

Biochemical properties

Virions contain 16-16.5-17 % nucleic acid; 83-83.5-84 % protein.

Genome consists of DNA (4/4); single-stranded (4/4); circular (4/4). Total genome size 1.29-2.325-3.36 kb. Genome unipartite (1/4), or of three parts (1/4), or of 7 parts (2/4); largest (or only) genome part 0.89-1.147-1.3 kb; the 2nd largest 0.88-1.09-1.3 kb; the 3rd largest 0.88-1.025-1.171 kb; the 4th largest 0.87 kb. Poly A region present (1/1).

NCBI sequence data (Entrez search)

Features of proteins

Virion protein(s) one (3/3); M_r 19000-20330-22000.

Cytopathology

Virions found in cytoplasm (1/1), or in cell vacuoles (1/1). Inclusions absent from infected cells (2/2).

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.