Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cereal chlorotic mottle (?) nucleorhabdovirus

Index

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

Data collated by R.S. Greber, 1980.

Nomenclature

Acronym

CerCMV (CCMV)

Strains

CCMV-Morocco.

ICTV decimal code

62.U.P.0.007

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Avena sativa, Digitaria ciliaris, Dinebra retroflexa, Echinochloa colona, Hordeum vulgare, Leptochloa filiformis, Setaria verticillata, Triticum aestivum, Urochloa panicoides, Zea mays - chlorotic streaking, variable stunting and sterility.

Transmission

Transmitted by a vector; an insect; Nesoclutha pallida, Cicadula bimaculata, Cicadulina bipunctata ssp. bipunctella; Cicadellidae. Transmitted in a persistent manner. Virus retained when the vector moults; multiplies in the vector; not transmitted congenitally to the progeny of the vector; not transmitted by mechanical inoculation; not transmitted by seed.

Geographical distribution

Spreads in Australia and Morocco.

Experimental host range

Few (<3) families susceptible (only Gramineae). Experimentally infected plants mostly show chlorotic striations.

Diagnostically susceptible host species and symptoms

• Dinebra retroflexa - chlorotic streaking.
• Leptochloa filiformis - chlorotic and necrotic streaking.
• Triticum spp. and × Triticosecale - chlorotic streaking.
• Zea mays - chlorotic streaks, but cvs differ in susceptibility.

Diagnostically insusceptible host species

Oryza sativa, Sorghum bicolor.

Maintenance and propagation hosts

Dinebra retroflexa.

Susceptible host species

• Avena sativa
• Digitaria ciliaris
• Dinebra retroflexa
• Echinochloa colona
• Eleusine coracana
• Eragrostis cilianensis
• Hordeum vulgare
• Leptochloa filiformis
• Setaria verticillata
• Triticum aestivum
• Urochloa panicoides
• × Triticosecale
• Zea mays

Insusceptible host species

• Chloris gayana
• Digitaria decumbens
• Oryza sativa
• Paspalum dilatatum
• Sorghum bicolor

Families containing susceptible hosts

• Gramineae (13/18)

Families containing insusceptible hosts

• Gramineae (5/18)

Sources of host-range data

Greber (1979).

Physical and biochemical properties

Properties of particles in sap

Leaf sap contains many virions. Electron microscopy: use PTA-H.

Purification method

Jackson and Christie (1977); Greber and Gowanlock (1979).

Particle morphology

Virions rhabdo- or bullet-shaped; enveloped; with a clear modal length; of 214 nm; 75 nm wide. Axial canal obscure.

Physical properties

One sedimenting component in purified preparations. Density 1.165 g cm^-3 in sucrose.

Features of proteins

Virion protein(s) five; M_r of the largest 82000. M_r of 2nd largest 52000. M_r of 3rd largest 45500. M_r of 4th largest 31800. M_r of 5th largest 28900. Method of preparation: Laemmli (1970).

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in mesophyll, phloem and companion cells; in the perinuclear space; cytoplasmic vesicles.

Taxonomy and relationships

Possible Nucleorhabdovirus: Rhabdoviridae

Virus(es) with serologically unrelated virions

8 rhabdoviruses of Poaceae, except for Moroccan cereal chlorotic mottle virus.

Comments and References

References

• Greber, R.S. (1977). Aust. Pl. Path. Soc. Newsl. 6: 17.
• Greber, R.S. (1979). Aust. J. agric. Res. 30: 433.
• Greber, R.S. (1982). CMI/AAB Descr. Pl. Viruses No. 251, 4 pp.
• Greber, R.S. and Gowanlock, D.H. (1979). Aust. J. biol. Sci. 32: 399.
• Jackson, A.O. and Christie, S.R. (1977). Virology 77: 344.
• Laemmli, U.K. (1970). Nature, Lond. 227: 680.
• Lockhart, B.E.L. (1986). Plant Dis. 70: 912.

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.