|Tzanetakis, I - OREGON STATE UNIVERSITY|
|Gergerich, R - UNIVERSITY OF ARKANSAS|
Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: June 6, 2006
Publication Date: July 29, 2006
Citation: Tzanetakis, I.E., Gergerich, R.C., Postman, J.D., Martin, R.R. 2006. Strawberry latent ringspot virus: the go-between of picorna-like plant virus families. Phytopathology. 96:S116. Technical Abstract: Strawberry latent ringspot virus (SLRSV) is transmitted by members of the genus Xiphinema and infects more than 125 plant species. SLRSV has been recently found in both mint and strawberry in North America. The presence of the nematode-transmitted SLRSV in strawberry, a crop in which methyl bromide is commonly used, led us to investigate the molecular and biological properties of the virus. The genome of SLRSV has been sequenced. Unlike previous reports for RNA 2, the results show that each of the two RNAs encodes a single polyprotein. RNA 1 polyprotein is putatively processed to five proteins involved in genome replication that are found in all picorna-like plant viruses while RNA 2 polyprotein has the movement and two coat proteins of the virus. The genome organization and phylogenetic analysis of SLRSV indicated that the virus is closely related to both the newly formed Cheravirus genus and members of the Comoviridae. The unique place of SLRSV in virus evolution and the finding of the virus in heavily fumigated soils led to the investigation of alternative modes of transmission. Both aphids and beetles were tested as vectors but failed to transmit the virus.