Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Varicosaviruses

Index

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

Nomenclature

ICTV reference

ICTV decimal code 79.0.P.3.

Definitive species

• Freesia leaf necrosis varicosavirus
• Lettuce big-vein varicosavirus
• Tobacco stunt varicosavirus

Tentative species

• Camellia yellow mottle (?) varicosavirus

Host range and symptoms

Natural host range and symptoms

Symptoms persist (2), or vary seasonally (3), or disappear soon after infection (1).

Transmission

Transmitted by a vector (3/3); a fungus (3/3); Chytridiales (3/3). Virus does not require a helper virus for vector transmission (1/1); transmitted by mechanical inoculation (3), or not transmitted by mechanical inoculation (1); transmitted by grafting (3/3); not transmitted by contact between plants (3/3); not transmitted by seed (3/3); not transmitted by pollen (3/3).

Experimental host range

Several (3-9) families susceptible (2), or few (<3) families susceptible (2).

Susceptible host species

• Beta vulgaris (1)
• Camellia (1)
• Camellia japonica (1)
• Camellia sasanqua (1)
• Catharanthus roseus (1)
• Chenopodium album (1)
• Chenopodium amaranticolor (3)
• Chenopodium quinoa (3)
• Cucumis sativus (1)
• Cyamopsis tetragonoloba (1)
• Datura stramonium (1)
• Datura tatula (1)
• Dianthus caryophyllus (1)
• Freesia refracta (1)
• Glycine max (1)
• Gomphrena globosa (1)
• Lactuca sativa (1)
• Lycopersicon esculentum (1)
• Nicotiana benthamiana (2)
• Nicotiana clevelandii (1)
• Nicotiana debneyi (1)
• Nicotiana glutinosa (1)
• Nicotiana hesperis (1)
• Nicotiana megalosiphon (1)
• Nicotiana occidentalis (2)
• Nicotiana rustica (1)
• Nicotiana sylvestris (1)
• Nicotiana tabacum (1)
• Petunia × hybrida (1)
• Physalis floridana (1)
• Pisum sativum (1)
• Solanum tuberosum (1)
• Sonchus asper (1)
• Sonchus oleraceus (1)
• Spinacia oleracea (1)
• Tetragonia tetragonioides (2)

Insusceptible host species

• Ageratum conyzoides (1/3)
• Amaranthus caudatus (1/3)
• Antirrhinum majus (2/3)
• Apium graveolens (1/3)
• Arachis hypogaea (1/3)
• Atriplex hortensis (1/3)
• Bellis perennis (1/3)
• Beta vulgaris (1/3)
• Brassica campestris ssp. napus (1/3)
• Brassica oleracea (1/3)
• Brassica oleracea var. botrytis (1/3)
• Brassica oleracea var. capitata (1/3)
• Calendula officinalis (1/3)
• Capsicum annuum (2/3)
• Catharanthus roseus (1/3)
• Celosia argentea (1/3)
• Chenopodium murale (2/3)
• Cucumis sativus (1/3)
• Cucurbita pepo (1/3)
• Cyamopsis tetragonoloba (1/3)
• Datura stramonium (1/3)
• Daucus carota (1/3)
• Echinops exaltatus (1/3)
• Gomphrena globosa (1/3)
• Lactuca sativa (2/3)
• Lathyrus odoratus (1/3)
• Lycopersicon esculentum (1/3)
• Medicago sativa (1/3)
• Nicotiana bigelovii (1/3)
• Nicotiana clevelandii (2/3)
• Nicotiana debneyi (1/3)
• Nicotiana glutinosa (1/3)
• Nicotiana rustica (1/3)
• Nicotiana tabacum (2/3)
• Papaver nudicaule (1/3)
• Petroselinum crispum (1/3)
• Petunia × hybrida (1/3)
• Phaseolus vulgaris (2/3)
• Physalis floridana (1/3)
• Phytolacca americana (1/3)
• Pisum sativum (1/3)
• Raphanus sativus (2/3)
• Salvia splendens (1/3)
• Solanum demissum (1/3)
• Sonchus oleraceus (1/3)
• Spinacia oleracea (1/3)
• Torenia fournieri (1/3)
• Trifolium hybridum (1/3)
• Trifolium pratense (1/3)
• Triticum aestivum (1/3)
• Verbesina encelioides (1/3)
• Vicia faba (2/3)
• Zea mays (1/3)
• Zinnia elegans (1/3)

Families containing susceptible hosts

• Amaranthaceae (1)
• Apocynaceae (1)
• Caryophyllaceae (1)
• Chenopodiaceae (3)
• Compositae (1)
• Cucurbitaceae (1)
• Iridaceae (1)
• Leguminosae-Papilionoideae (1)
• Solanaceae (3)
• Tetragoniaceae (2)
• Theaceae (1)

Families containing insusceptible hosts

• Amaranthaceae (2/3)
• Apocynaceae (1/3)
• Chenopodiaceae (2/3)
• Compositae (2/3)
• Cruciferae (2/3)
• Cucurbitaceae (2/3)
• Gramineae (1/3)
• Labiatae (1/3)
• Leguminosae-Papilionoideae (2/3)
• Papaveraceae (1/3)
• Phytolaccaceae (1/3)
• Scrophulariaceae (2/3)
• Solanaceae (3/3)
• Umbelliferae (1/3)

Physical and biochemical properties

Properties of particles in sap

TIP: 40-47.5-50 °C. LIV: 1 days. DEP: log₁₀ minus 1 (1/2), or 3-4 (1/2). Leaf sap contains few virions (3/3).

Particle morphology

Virions rod-shaped (3/3); not enveloped (2/2); usually straight (2/2); with a clear modal length (2/2); of 120-268.3-360 nm; 18-22-30 nm wide. Axial canal obvious (3/3); 3-5.5-10 nm in diameter. Basic helix obvious (2/2); pitch of basic helix 5-6.666-10 nm.

Biochemical properties

Genome consists of RNA (2/2); double-stranded (2/2); linear (2/2). Total genome size 11.98-12.74-13.5 kb. Genome of two parts (2/2); largest (or only) genome part 6.35-6.675-7 kb; the 2nd largest 5.63-6.065-6.5 kb.

Features of proteins

Virion protein(s) one (2/2); M_r 48000.

Replication

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

Cytopathology

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

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.