Plant Viruses Online   

Descriptions and Lists from the VIDE Database

Machlomoviruses

Index

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

Nomenclature

ICTV reference

ICTV decimal code 40.0.1.

Definitive species

• Maize chlorotic mottle machlomovirus

Transmission

Transmitted by a vector; an insect; Coleoptera, or Thysanoptera. Transmitted in a non-persistent manner. Virus transmitted by mechanical inoculation; transmitted by seed.

Susceptible host species

• Bromus inermis
• Bromus mollis
• Bromus racemosus
• Bromus secalinus
• Bromus tectorum
• Hordeum vulgare
• Panicum capillare
• Panicum dichotomiflorum
• Panicum maximum
• Panicum miliaceum
• Triticum aestivum
• Zea mays

Insusceptible host species

• Sorghum bicolor

Families containing susceptible hosts

• Gramineae

Families containing insusceptible hosts

• Gramineae

Host range and symptoms

No data available.

Physical and biochemical properties

Properties of particles in sap

TIP: 80-85 °C. LIV: 12-33 days. DEP: log₁₀ minus 6-8. Leaf sap contains few virions.

Particle morphology

Virions isometric; not enveloped; 30 nm in diameter; angular in profile; without a conspicuous capsomere arrangement.

Physical properties

One sedimenting component in purified preparations; sedimentation coefficient 109 S. Density 1.365 g cm^-3 in CsCl.

Biochemical properties

Virions contain 18 % nucleic acid; 82 % protein.

Genome consists of RNA; single-stranded; linear. Total genome size 4.4 kb. Genome unipartite; largest (or only) genome part 4.4 kb. Base composition 22-25 % G; 24-26 % A; 15-16 % C; 34-37 % U. 5´ terminus of RNA has a methylated nucleotide cap. Poly A region absent.

NCBI sequence data (Entrez search)

Features of the genome

Non-genomic nucleic acid found in the virions; is subgenomic mRNA. 2 virus specified dsRNA species found in infected cells. Size of largest virus specified dsRNA 4.4 kbp; 2nd largest 1.1 kbp.

Features of proteins

Virion protein(s) one; M_r 25100.

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.