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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Research Unit » Research » Publications at this Location » Publication #183483

Title: DULCAMARA MOTTLE VIRUS: A TYMOVIRUS LACKING THE TRNA-LIKE STRUCTURE

Author
item TZANETAKIS, I - OREGON STATE UNIVERSITY
item Martin, Robert
item DREHER, T - OREGON STATE UNIVERSITY

Submitted to: Phytopathology
Publication Type: Abstract Only
Publication Acceptance Date: 5/20/2005
Publication Date: 6/5/2005
Citation: Tzanetakis, I.E., Martin, R.R., Dreher, T.W. 2005. Dulcamara mottle virus: a tymovirus lacking the trna-like structure. Phytopathology. 95:S106.

Interpretive Summary:

Technical Abstract: The Tymovirus genus consists of positive-strand RNA viruses organized in three open reading frames. The genome consists of the replicase with methyltransferase, helicase, protease and polymerase motifs, and the movement and coat proteins of the virus. The 5’ end of the genome has a cap structure while the 3’ end has a tRNA-like structure which enhances virus replication and protein translation. The complete nucleotide sequence of Dulcamara mottle virus (DuMV) was obtained. Genome organization is similar to that of other tymoviruses and phylogenetic analysis indicated the close relationship of DuMV with Eggplant mosaic virus and Ononis yellow mosaic virus. DuMV is unique due to the unusual 3’end that lacks the tRNA-like structure found in all other members of the genus. Instead, an internal track of about 50 adenosines was found near the end of the genome. Studies are currently underway to determine the involvement of the polyA track in virus life cycle.