Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Marafiviruses

Index

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

Nomenclature

ICTV reference

ICTV decimal code 41.0.1.

Definitive species

• Bermuda grass etched-line marafivirus
• Maize rayado fino marafivirus
• Oat blue dwarf marafivirus

Host range and symptoms

Natural host range and symptoms

Symptoms persist (2/2), or vary seasonally (1/2).

Transmission

Transmitted by a vector; an insect; Cicadellidae. Transmitted in a persistent manner. Virus retained when the vector moults (2/2); multiplies in the vector; not transmitted by mechanical inoculation; not transmitted by grafting (1/1); not transmitted by contact between plants (2/2); not transmitted by seed; not transmitted by pollen (1/1).

Experimental host range

Several (3-9) families susceptible (1), or few (<3) families susceptible (2).

Susceptible host species

• Avena fatua (1)
• Avena sativa (2)
• Bromus inermis (1)
• Centaurea cyanus (1)
• Chrysanthemum morifolium (1)
• Cichorium endiva (1)
• Cynodon dactylon (1)
• Daucus carota (1)
• Festuca arundinacea (1)
• Gaillardia aristata (1)
• Hordeum jubatum (1)
• Hordeum vulgare (1)
• Linum grandiflorum (1)
• Linum usitatissimum (1)
• Secale cereale (1)
• Sinapis arvensis (1)
• Sorghum bicolor (1)
• Sorghum halepense (1)
• Spinacia oleracea (1)
• Stellaria media (1)
• Thlaspi arvense (1)
• Triticum aestivum (1)
• Triticum durum (2)
• Zea mays (2)
• Zea mays ssp. mays (1)
• Zea mays ssp. mexicana (1)

Insusceptible host species

• Agrostis alba (1/2)
• Amaranthus retroflexus (1/2)
• Apium graveolens (1/2)
• Beta vulgaris (1/2)
• Brassica campestris (1/2)
• Brassica campestris ssp. napus (1/2)
• Brassica oleracea var. botrytis (1/2)
• Brassica oleracea var. capitata (1/2)
• Calendula officinalis (1/2)
• Callistephus chinensis (1/2)
• Capsicum frutescens (1/2)
• Carthamus tinctorius (1/2)
• Chenopodium album (1/2)
• Cucumis sativus (1/2)
• Dianthus barbatus (1/2)
• Echinochloa crus-galli (1/2)
• Elytrigia repens (1/2)
• Fagopyrum esculentum (1/2)
• Helianthus annuus (1/2)
• Hordeum vulgare (1/2)
• Lactuca sativa (1/2)
• Lolium perenne (1/2)
• Lycopersicon esculentum (1/2)
• Melilotus albus (1/2)
• Nicotiana rustica (1/2)
• Panicum dichotomiflorum (1/2)
• Pastinaca sativa (1/2)
• Petroselinum crispum (1/2)
• Petunia × hybrida (1/2)
• Phalaris arundinacea (1/2)
• Phaseolus vulgaris (1/2)
• Raphanus sativus (1/2)
• Saccharum officinarum (1/2)
• Secale cereale (1/2)
• Senecio vulgaris (1/2)
• Setaria viridis (2/2)
• Solanum melongena (1/2)
• Trifolium pratense (1/2)
• Vicia sativa (1/2)
• Zea mays (1/2)
• Zinnia elegans (1/2)

Families containing susceptible hosts

• Caryophyllaceae (1)
• Chenopodiaceae (1)
• Compositae (1)
• Cruciferae (1)
• Gramineae
• Linaceae (1)
• Umbelliferae (1)

Families containing insusceptible hosts

• Amaranthaceae (1/2)
• Caryophyllaceae (1/2)
• Chenopodiaceae (1/2)
• Compositae (1/2)
• Cruciferae (1/2)
• Cucurbitaceae (1/2)
• Gramineae (2/2)
• Leguminosae-Papilionoideae (1/2)
• Polygonaceae (1/2)
• Solanaceae (1/2)
• Umbelliferae (1/2)

Physical and biochemical properties

Properties of particles in sap

TIP: 60-63.75-70 °C. LIV: 3-13.75-32 days. DEP: log₁₀ minus 5 (1/1). Leaf sap contains few virions (1/2), or contains many virions (1/2).

Particle morphology

Virions isometric; not enveloped; 28-30.16-33 nm in diameter; rounded in profile; with a conspicuous capsomere arrangement.

Physical properties

Two sedimenting components in purified preparations (2), or three sedimenting components in purified preparations (1); sedimentation coefficient 119-119.3-120 S; of the other(s) 54-55.5-57 S. Density 1.28-1.367-1.46 g cm^-3 in CsCl. A₂₆₀/A₂₈₀ ratio 0.87-1.353-1.63.

Biochemical properties

Virions contain 33 % nucleic acid; 67 % protein.

Genome consists of RNA; single-stranded; linear (2/2). Total genome size 6.7-6.98-7.5 kb. Genome unipartite; largest (or only) genome part 6.7-6.98-7.5 kb. Additional factor not required for infectivity (1/1).

NCBI sequence data (Entrez search)

Features of proteins

Virion protein(s) one (2/2); M_r 22000-24250-26500. Virion proteins not glycosylated (1/1).

Replication

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

Cytopathology

Virions found in cytoplasm, or in cell vacuoles (2). Inclusions present in infected cells (1/2), or absent from infected cells (1/2); are crystals in the cytoplasm (1/1), or membranous bodies (1/1), or viroplasms (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.