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Viral properties, primary structure and phylogenetic analysis of the coat protein of an Olive latent virus 1 isolate from Olea europaea L.

M R MR Félix, J M S JM Cardoso, S S Oliveira, and M I E MI Clara

Virus Res 108(1-2):4 (2005) PMID 15681070

An Olive latent virus 1 isolate designated GM6, obtained from a Portuguese olive tree, was characterized and the coat protein gene sequenced and analysed. The purified virus particles showed to be isometric with ca. 30nm in diameter and contained a single-stranded RNA species with ca. 3.7kb. The dsRNA profile obtained from infected tissues showed three major species with ca. 3.7, 1.5 and 1.3kbp. SDS-PAGE analysis revealed a major peptide with an apparent molecular mass of 32kDa identified as the coat protein. A viral genome region containing the coat protein gene was amplified by RT-PCR and the cDNA was cloned and sequenced. The coat protein gene revealed to be 813 nucleotides long and encode a peptide with 270 amino acid residues and an estimated M"r of 29,851. Alignment of the deduced amino acid sequence with that of other necroviruses showed a higher identity with OLV-1 tulip isolate (97.7%) than with OLV-1 citrus isolate (87.7%). The consensus pattern of the coat protein 'S' domain is conserved in GM6 isolate coat protein sequence, except in amino acid 151, leucine. This is the first report on the coat protein sequence of an OLV-1 olive isolate.

Copyright © 2005 Elsevier Ltd. All rights reserved.

DOI: 10.1016/j.virusres.2004.09.007
Version: za2963e q8za0 q8zbc q8zc3 q8zd7 q8ze4 q8zf9 q8zg1

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