Archives of Virology

, Volume 157, Issue 9, pp 1825–1830 | Cite as

Complete genome sequence of switchgrass mosaic virus, a member of a proposed new species in the genus Marafivirus

  • Bright O. Agindotan
  • Michael E. Gray
  • Rosemarie W. Hammond
  • Carl A. Bradley
Annotated Sequence Record


The complete genome sequence of a virus recently detected in switchgrass (Panicum virgatum) was determined and found to be closely related to that of maize rayado fino virus (MRFV), genus Marafivirus, family Tymoviridae. The genomic RNA is 6408 nucleotides long. It contains three predicted open reading frames (ORFs 1-3), encoding proteins of 227 kDa, 43.9 kDa, and 31.5 kDa, compared to two ORFs (1 and 2) for MRFV. The complete genome shares 76 % sequence identity with MRFV. The nucleotide sequence of ORF2 of this virus and the amino acid sequence of its encoded protein are 49 % and 77 % identical, respectively, to those of MRFV. The virus-encoded polyprotein and capsid protein aa sequences are 83 % and 74-80 % identical, respectively, to those of MRFV. Although closely related to MRFV, the amino acid sequence of its capsid protein (CP) forms a clade that is separate from that of MRFV. Based on the International Committee on Taxonomy of Viruses (ICTV) sequence-related criteria for delineation of species within the genus Marafivirus, the virus qualifies as a member of a new species, and the name Switchgrass mosaic virus (SwMV) is proposed.


Capsid Protein Amino Acid Sequence Identity Panicum Virgatum Turnip Yellow Mosaic Virus Corn Leafhopper 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We are grateful to British Petroleum (BP) and the Energy Biosciences Institute (EBI), University of Illinois, Urbana-Champaign, for their support and funding of this research.


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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Bright O. Agindotan
    • 1
  • Michael E. Gray
    • 1
    • 2
  • Rosemarie W. Hammond
    • 3
  • Carl A. Bradley
    • 1
    • 2
  1. 1.Energy Biosciences InstituteUniversity of IllinoisUrbanaUSA
  2. 2.Department of Crop SciencesUniversity of IllinoisUrbanaUSA
  3. 3.United States Department of Agriculture USDA-ARSBeltsvilleUSA

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