Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Cassava vein mosaic (?) caulimovirus

Index

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

Data collated by E.W. Kitajima, 1985.

Nomenclature

Acronym

CsVMV

ICTV decimal code

15.0.1.T.002

Host range and symptoms

Natural host range and symptoms

Symptoms persist.
• Manihot esculenta - vein mosaic.

Transmission

Transmitted by means not involving a vector. Virus transmitted by mechanical inoculation; transmitted by grafting; not transmitted by seed; not transmitted by pollen.

Geographical distribution

Spreads in Brazil.

Experimental host range

Few (<3) families susceptible. Experimentally infected plants mostly show vein mosaic.

Diagnostically susceptible host species and symptoms

• Manihot esculenta - vein mosaic.

Maintenance and propagation hosts

Manihot esculenta.

Assay hosts (Local lesions or Whole plants)

Manihot esculenta (W).

Susceptible host species

• Manihot esculenta

Families containing susceptible hosts

• Euphorbiaceae (1/1)

Physical and biochemical properties

Properties of particles in sap

Infectivity of sap not changed by treatment with di-ethyl ether. Leaf sap contains few virions.

Purification method

Lin and Kitajima (1980).

Particle morphology

Virions isometric; not enveloped; 45-50 nm in diameter; rounded in profile; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 246 S.

Biochemical properties

Genome consists of DNA; double-stranded; circular. Nucleotide sequence references: R.J. Shepherd (personal communication).

NCBI sequence data (Entrez search)

Sequence database accession code(s)

• U20341 Em(43)_vi:Cv20341 Gb(89)_vi:Cvu20341 Cassava vein mosaic virus, complete genome. 4/95 8,158bp.

Replication

Replication does not depend on a helper virus.

Cytopathology

Virions found in all parts of the host plant; in cytoplasm. Inclusions present in infected cells; are viroplasms (but not as dense as those of other caulimoviruses); they contain virions.

Taxonomy and relationships

Possible Caulimovirus

Virus(es) with serologically related virions

None.

Comments and References

References

• Costa, A.S. and Normanha, E.S. (1940). J. Agron. 3: 239.
• Kitajima, E.W. and Costa, A.S. (1966). Bragantia 25: 211.
• Lin, M.T. and Kitajima, E.W. (1980). Fitopatol. Bras. 5: 419.

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.