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Nature of Genome:
General Host Type:
Morphology:

negative-stranded ssRNA
Plants
not enveloped, filamentous

Family

00.069.  Unassigned


 

Taxonomic Structure of the Family
 

Family         00.069. Unassigned
Genus                      00.069.0.01. Tenuivirus


Genus

00.069.0.01.   Tenuivirus

Type Species

00.069.0.01.001.     Rice stripe virus

List of Species Demarcation Criteria in the Genus

The criteria demarcating species in the genus are:

  • Vector specificity, i.e. transmission by different species of vector
  • Host range, i.e. different abilities to infect key plant species
  • Different sizes and/or numbers of RNA components
  • <85% as sequence identity between any corresponding gene products
  • <60% nt sequence identity between corresponding non-coding intergenic regions

    • An example of species discrimination is that between RSV and MSpV. RSV is transmitted by Laodelphax striatellus and infects 37 species in the Graminae including wheat and rice. MSpV is transmitted by Peregrinus maidis and infects maize, occasionally sorghum and a few other graminaceous plants but not wheat or rice. RSV isolates have genomes of four RNA segments of 9090, 3514, 2475 to 2504 and 2137 to 2157 nt; the MSpV genome has five segments of 9121, 3575, 2357, 2227 and 1317 nt. Also, the differences in sequence among the components of these viruses all fall outside the limits set by the Species Demarcation Criteria.

    It is difficult to decide if the hoja blanca viruses are one or several species. They have different vectors, different hosts, different sizes and numbers of RNA segments and the nt identity of their intergenic regions is less than 60%. However, the as sequences of the 4 proteins on RNA-3 and RNA-4 are about 90% identical between RHBV, EHBV and UHBV (although the nt identities of these same coding regions are about 81% identical among them). So 4 out of 5 criteria are met, therefore they could be considered distinct species, possibly only recently separated and now diverging, with little contact in the field between them.

    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

    00.069.0.01.006.

    Echinochloa hoja blanca virus

    00.069.0.01.006.00.001.

        Echinochloa hoja blanca virus

    RNA-3: [L75930]

    (EHBV)

    00.069.0.01.006.00.001.

        Echinochloa hoja blanca virus

    RNA-4: [L48441]

    (EHBV)

    00.069.0.01.006.00.001.

        Echinochloa hoja blanca virus

    RNA-5: [L47430]

    (EHBV)

    00.069.0.01.002.

    Maize stripe virus

    00.069.0.01.002.00.001.

        Maize stripe virus

    RNA-2: [U53224]

    (MSpV)

    00.069.0.01.002.00.001.

        Maize stripe virus

    RNA-3: [M57426]

    (MSpV)

    00.069.0.01.002.00.001.

        Maize stripe virus

    RNA-4: [L13438]

    (MSpV)

    00.069.0.01.002.00.001.

        Maize stripe virus

    RNA-5: [L13446]

    (MSpV)

    00.069.0.01.003.

    Rice grassy stunt virus

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-1: [AF509470]

    (RGSV-cn)

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-2: [AF511072]

    (RGSV-cn)

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-3: [AF397468]

    (RGSV-cn)

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-4: [AF290946]

    (RGSV-cn)

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-5: [AF290947]

    (RGSV-cn)

    00.069.0.01.003.00.001.

        Rice grassy stunt virus - cn

    RNA-6: [AF287949]

    (RGSV-cn)

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-1: [AB009656]

    (RGSV-ph(l))

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-2: [AB010376]

    (RGSV-ph(l))

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-3: [AB010377]

    (RGSV-ph(l))

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-4: [AB010378]

    (RGSV-ph(l))

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-5: [AB000403]

    (RGSV-ph(l))

    00.069.0.01.003.00.002.

        Rice grassy stunt virus – ph (Laguna)

    RNA-6: [AB000404]

    (RGSV-ph(l))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-1: [AB032180]

    (RGSV-ph(sc))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-2: [AB023777]

    (RGSV-ph(sc))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-3: [AB029894]

    (RGSV-ph(sc))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-4: [AB023778]

    (RGSV-ph(sc))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-5: [AB023779]

    (RGSV-ph(sc))

    00.069.0.01.003.00.003.

        Rice grassy stunt virus – ph (South Cotabato)

    RNA-6: [AB023780]

    (RGSV-ph(sc))

    00.069.0.01.004.

    Rice hoja blanca virus

    00.069.0.01.004.00.001.

        Rice hoja blanca virus - co

    RNA-3: [AF004658]

    (RHBV-co)

    00.069.0.01.004.00.001.

        Rice hoja blanca virus - co

    RNA-4: [L14952]

    (RHBV-co)

    00.069.0.01.004.00.002.

        Rice hoja blanca virus - cr

    RNA-1: [AF009569]

    (RHBV-cr)

    00.069.0.01.004.00.002.

        Rice hoja blanca virus - cr

    RNA-2: [L54073]

    (RHBV-cr)

    00.069.0.01.004.00.002.

        Rice hoja blanca virus - cr

    RNA-3: [L07940]

    (RHBV-cr)

    00.069.0.01.004.00.002.

        Rice hoja blanca virus - cr

    RNA-4: [AF004657]

    (RHBV-cr)

    00.069.0.01.005.

    Rice stripe virus

    00.069.0.01.005.00.001.

        Rice stripe virus - cn

    RNA-3: [Y11095]

    (RSV-cn)

    00.069.0.01.005.00.001.

        Rice stripe virus - cn

    RNA-4: [Y11096]

    (RSV-cn)

    00.069.0.01.005.00.002.

        Rice stripe virus - cn (bs)

    RNA-3: [AF220103]

    (RSV-cn(bs))

    00.069.0.01.005.00.002.

        Rice stripe virus - cn (bs)

    RNA-4: [AF221830]

    (RSV-cn(bs))

    00.069.0.01.005.00.003.

        Rice stripe virus - cn (cx)

    RNA-1: [AY186787]

    (RSV-cn(cx))

    00.069.0.01.005.00.003.

        Rice stripe virus - cn (cx)

    RNA-2: [AY186790]

    (RSV-cn(cx))

    00.069.0.01.005.00.003.

        Rice stripe virus - cn (cx)

    RNA-4: [AY185501]

    (RSV-cn(cx))

    00.069.0.01.005.00.004.

        Rice stripe virus - cn (dl)

    RNA-4: [AY185502]

    (RSV-cn(dl))

    00.069.0.01.005.00.005.

        Rice stripe virus - cn (dw)

    RNA-3: [AF509500]

    (RSV-cn(dw))

    00.069.0.01.005.00.006.

        Rice stripe virus - cn (hz)

    RNA-1: [AY186788]

    (RSV-cn(hz))

    00.069.0.01.005.00.006.

        Rice stripe virus - cn (hz)

    RNA-2: [AY186789]

    (RSV-cn(hz))

    00.069.0.01.005.00.006.

        Rice stripe virus - cn (hz)

    RNA-3: [AF508865]

    (RSV-cn(hz))

    00.069.0.01.005.00.006.

        Rice stripe virus - cn (hz)

    RNA-4: [AF513505]

    (RSV-cn(hz))

    00.069.0.01.005.00.007.

        Rice stripe virus - cn (jd)

    RNA-3: [AF220104]

    (RSV-cn(jd))

    00.069.0.01.005.00.007.

        Rice stripe virus - cn (jd)

    RNA-4: [AF221831]

    (RSV-cn(jd))

    00.069.0.01.005.00.008.

        Rice stripe virus - cn (jn)

    RNA-3: [AF220105]

    (RSV-cn(jn))

    00.069.0.01.005.00.008.

        Rice stripe virus - cn (jn)

    RNA-4: [AF221832]

    (RSV-cn(jn))

    00.069.0.01.005.00.009.

        Rice stripe virus - cn (km)

    RNA-3: [AF508912]

    (RSV-cn(km))

    00.069.0.01.005.00.009.

        Rice stripe virus - cn (km)

    RNA-4: [AY185499]

    (RSV-cn(km))

    00.069.0.01.005.00.010.

        Rice stripe virus - cn (ly)

    RNA-3: [AF220106]

    (RSV-cn(ly))

    00.069.0.01.005.00.010.

        Rice stripe virus - cn (ly)

    RNA-4: [AF221833]

    (RSV-cn(ly))

    00.069.0.01.005.00.011.

        Rice stripe virus - cn (pj)

    RNA-3: [AF220107]

    (RSV-cn(pj))

    00.069.0.01.005.00.011.

        Rice stripe virus - cn (pj)

    RNA-4: [AF221834]

    (RSV-cn(pj))

    00.069.0.01.005.00.012.

        Rice stripe virus - cn (sq)

    RNA-3: [AF220108]

    (RSV-cn(sq))

    00.069.0.01.005.00.012.

        Rice stripe virus - cn (sq)

    RNA-4: [AF221835]

    (RSV-cn(sq))

    00.069.0.01.005.00.013.

        Rice stripe virus - cn (yl)

    RNA-3: [AF508913]

    (RSV-cn(yl))

    00.069.0.01.005.00.013.

        Rice stripe virus - cn (yl)

    RNA-4: [AF221836]

    (RSV-cn(yl))

    00.069.0.01.005.00.014.

        Rice stripe virus - cn (yr)

    RNA-4: [AY185500]

    (RSV-cn(yr))

    00.069.0.01.005.00.015.

        Rice stripe virus -.jp (m)

    RNA-3: [D01094]

    (RSV-'(m))

    00.069.0.01.005.00.015.

        Rice stripe virus -.jp (m)

    RNA-4: [D01039]

    (RSV-'(m))

    00.069.0.01.005.00.016.

        Rice stripe virus - jp ( o )

    RNA-2: [D13787]

    (RSV-jp(o))

    00.069.0.01.005.00.017.

        Rice stripe virus - jp (t)

    RNA-1: [D31879]

    (RSV-jp(t))

    00.069.0.01.005.00.017.

        Rice stripe virus - jp (t)

    RNA-2: [D13176]

    (RSV-jp(t))

    00.069.0.01.005.00.017.

        Rice stripe virus - jp (t)

    RNA-3: [X53563]

    (RSV-jp(t))

    00.069.0.01.005.00.017.

        Rice stripe virus - jp (t)

    RNA-4: [D10979]

    (RSV-jp(t))

    00.069.0.01.009.

    Urochloa hoja blanca virus

    00.069.0.01.009.00.001.

        Urochloa hoja blanca virus

    RNA-1: [U82448]

    (UHBV)

    00.069.0.01.009.00.001.

        Urochloa hoja blanca virus

    RNA-3: [U82447]

    (UHBV)

    00.069.0.01.009.00.001.

        Urochloa hoja blanca virus

    RNA-4: [U82446]

    (UHBV)































































































    Tentative Species in the Genus

    00.069.0.81.007.

    European wheat striate mosaic virus

    00.069.0.81.007.00.001.

        European wheat striate mosaic virus

    (EWSMV)

    00.069.0.81.010.

    Iranian wheat stripe virus

    00.069.0.81.010.00.001.

        Iranian wheat stripe virus

    (IWSV)

    00.069.0.81.012.

    Rice wilted stunt virus

    00.069.0.81.012.00.001.

        Rice wilted stunt virus

    (RWSV)

    00.069.0.81.008.

    Winter wheat mosaic virus

    00.069.0.81.008.00.001.

        Winter wheat mosaic virus

    (WWMV)












    Similarity with other Taxa

    Tenuiviruses have some similarities with viruses classified in the family Bunyaviridae, particularly those in the genus Phlebovirus. The multipartite genomes of tenuiviruses contain negative sense and ambisense components. RNPs containing the genomic RNAs can be purified from infected plants. The genomic RNA 5'- and 3'-ends can base-pair, and probably give rise to circular RNPs. Generation of mRNA involves a cap-snatching mechanism. Like viruses in most genera in the family Bunyaviridae, tenuiviruses infect their insect vectors as well as their primary hosts, plants. The number of genome components (four to six) and the apparent lack of a membrane-bound virus particle distinguish tenuiviruses from viruses in the family Bunyaviridae. Recent data raise the possibility that RGSV be classified in a separate genus. It has six RNA segments that in total encode four or five proteins in addition to those characteristic of the expression of a tenuivirus genome. Moreover, the sequence relatedness of the RGSV gene products with those of other tenuiviruses are all unusually low.

    Derivation of Names

    Tenui: from Latin tenuis, "thin, fine, weak".

    References

    Collated from VIIIth ICTV Report

    Contributed by

    Haenni, A.-L., de Miranda, J.R., Falk, B.W., Goldbach, R., Mayo, M.A., Shirako, Y. and Toriyama, S.

    Cite this publication as: Index of Viruses - Tenuivirus (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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