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J Gen Virol 72 (1991), 1-7; DOI 10.1099/0022-1317-72-1-1
© 1991 Society for General Microbiology
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Tomato Aspermy Virus has an Evolutionary Relationship with Other Tripartite RNA Plant Viruses

David O'Reilly2, Chris J. R. Thomas2 and Robert H. A. Coutts1

1 Department of Biology, Imperial College of Science, Technology and Medicine, Prince Consort Road, London SW7 2BB
and2 Advanced Technologies (Cambridge) Ltd, Cambridge Science Park, Cambridge CB4 4WA, U.K.

The entire RNA 3 (2214 nucleotides) of a chrysanthemum isolate of tomato aspermy virus (C-TAV) has been cloned and its sequence determined. C-TAV possesses two open reading frames which encode a 3a protein (277 amino acids) and a coat protein (229 amino acids). Computer-assisted comparisons were made between C-TAV RNA 3 and its predicted protein sequences and those of two other tripartite RNA viruses, cucumber mosaic virus (CMV) and brome mosaic virus (BMV). Results from this study suggest that a close evolutionary relationship exists between C-TAV, Q-CMV and BMV. Divergence of nucleotide and amino acid sequences between these viruses is not reflected at the level of the predicted secondary structure of the encoded proteins, where conservation is strong.

Received 6 June 1990; accepted 12 October 1990.


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S. Liu, X. He, G. Park, C. Josefsson, and K. L. Perry
A Conserved Capsid Protein Surface Domain of Cucumber Mosaic Virus Is Essential for Efficient Aphid Vector Transmission
J. Virol., August 28, 2002; 76(19): 9756 - 9762.
[Abstract] [Full Text] [PDF]


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Copyright © 1991 by the Society for General Microbiology.