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

Complete genome sequence of switchgrass mosaic virus, a member of a proposed new species in the... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

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

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Publisher
Springer Journals
Copyright
Copyright © 2012 by Springer-Verlag
Subject
Biomedicine; Virology; Infectious Diseases; Medical Microbiology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-012-1354-3
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Archives of VirologySpringer Journals

Published: Sep 1, 2012

References

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