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Nature of Genome:
General Host Type:
Morphology:

positive-stranded ssRNA
Plants
not enveloped, ribonucleoprotein complex

Family

00.078.  Unassigned

EM by D.-E. Lesemann: Tonoplast associated vesicles, (70) - 120 - (140) nm in diameter, in the vacuole of a SiA infected groundnut leaf parenchyma cell. Fibrilliar material inside the vesicles resembles dsRNA structures. Micrograph shows complex extentions of the cytoplasm into the vacuole, which are often found in SiA-infected cells.<BR> The bar represents 500 nm.
 

Taxonomic Structure of the Family
 

Family         00.078. Unassigned
Genus                      00.078.0.01. Umbravirus


Genus

00.078.0.01.   Umbravirus

Type Species

00.078.0.01.001.     Carrot mottle virus

List of Species Demarcation Criteria in the Genus

The criteria demarcating species in the genus are:
  • Natural host range,
  • dsRNA band pattern (bearing in mind that some bands may represent satellite RNA species),
  • Nucleotide sequence identity less than 55%, and
  • Little or no hybridization with cDNA probes representing most parts of the genome.

    • List of Species in the Genus

    The ICTVdB virus code and the viruses. Official virus species names are in italics. Tentative virus species names, alternative names ( ), isolates, strains, serotypes, subspecies, or rejected names are not italicized.
     
    Virus codes, virus names, genome sequence accession numbers [ ] and assigned abbreviations ( ), are:

    Species, their serotypes, strains and isolates

    00.078.0.01.003.

    Carrot mottle mimic virus

    00.078.0.01.003.00.001.

        Carrot mottle mimic virus

    [U57305]

    (CMoMv)

    00.078.0.01.004.

    Carrot mottle virus

    00.078.0.01.004.00.001.

        Carrot mottle virus

    (CMov)

    00.078.0.01.005.

    Groundnut rosette virus

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    [Z69910]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29702]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29703]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29704]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29705]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29706]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29707]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29708]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29709]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29710]

    (GRV)

    00.078.0.01.005.00.001.

        Groundnut rosette virus

    satellite RNA: [Z29711]

    (GRV)

    00.078.0.01.006.

    Lettuce speckles mottle virus

    00.078.0.01.006.00.001.

        Lettuce speckles mottle virus

    (LSMV)

    00.078.0.01.007.

    Pea enation mosaic virus-2

    00.078.0.01.007.00.002.

        Bean yellow vein-banding virus

    (BYVBV)

    00.078.0.01.007.00.001.

        Pea enation mosaic virus-2

    [U03563]

    (PEMV-2)

    00.078.0.01.007.00.001.

        Pea enation mosaic virus-2

    satellite RNA: [U03564]

    (PEMV-2)

    00.078.0.01.008.

    Tobacco bushy top virus

    00.078.0.01.008.00.001.

        Tobacco bushy top virus

    [AF402620]

    (TBTV)

    00.078.0.01.011.

    Tobacco mottle virus

    00.078.0.01.011.00.001.

        Tobacco mottle virus

    [AY007231]

    (TMoV)


































    Tentative Species in the Genus

    00.078.0.81.009.

    Sunflower crinkle virus

    00.078.0.81.009.00.001.

        Sunflower crinkle virus

    (SuCV)

    00.078.0.81.010.

    Sunflower yellow blotch virus

    00.078.0.81.010.00.001.

        Sunflower yellow blotch virus

    (SuYBV)

    00.078.0.81.012.

    Tobacco yellow vein virus

    00.078.0.81.012.00.001.

        Tobacco yellow vein virus

    (TYVV)









    Similarity with other Taxa

    Amino acid sequence comparisons show that the putative RdRp encoded by the genomic RNA molecules of CMoMV, GRV, PEMV-2 and TBTV belong to the so-called supergroup 2 of RNA polymerases, as do those of viruses in the genera Carmovirus, Dianthovirus, Luteovirus, Machlomovirus, Necrovirus, and Tombusvirus. Since these enzymes are the only universally conserved proteins of positive-strand RNA viruses, the genus Umbravirus might be considered to be in or close to the family Tombusviridae.

    Derivation of Names

    Umbra: From Latin, a shadow. In English, a shadow, an uninvited guest that comes with an invited one.

    References

    Collated from VIIIth ICTV Report

    Contributed by

    Taliansky, M.E., Robinson, D.J., Waterhouse, P.M., Murant, A.F., de Zoeten, G.A., Falk, B.W. and Gibbs, M.J.

    Cite this publication as: Index of Viruses - Umbravirus (2006). In: ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C (Ed), Columbia University, New York, USA. http://www.ncbi.nlm.nih.gov/ICTVdb/Ictv/fs_index.htm

    Version 4 is based on Virus Taxonomy, Classification and Nomenclature of Viruses, 8th ICTV Report of the International Committee on Taxonomy of Viruses. Fauquet, CM, Mayo, MA, Maniloff, J, Desselberger, U, and Ball, LA (EDS) (2005) Elsevier/Academic Press, pp. 1259.

    Additional References

    Reference List from the 8th ICTV Report
    ICTVdB taxon description
    ICTVdB Picture Gallery

    References to sequence databases at GenBank and PubMed Central:
    PubMed Central References; nucleotide sequences; complete genomes



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