Completion of the genome sequence of Lettuce necrotic yellows virus, type species of the genus Cytorhabdovirus

  • Dietzgen R
  • Callaghan B
  • Wetzel T
 et al. 
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Abstract

We completed the genome sequence of Lettuce necrotic yellows virus (LNYV) by determining the nucleotide sequences of the 4a (putative phosphoprotein), 4b, M (matrix protein), G (glycoprotein) and L (polymerase) genes. The genome consists of 12,807 nucleotides and encodes six genes in the order 3′ leader-N-4a(P)-4b-M-G-L-5′ trailer. Sequences were derived from clones of a cDNA library from LNYV genomic RNA and from fragments amplified using reverse transcription-polymerase chain reaction. The 4a protein has a low isoelectric point characteristic for rhabdovirus phosphoproteins. The 4b protein has significant sequence similarities with the movement proteins of capillo- and trichoviruses and may be involved in cell-to-cell movement. The putative G protein sequence contains a predicted 25 amino acids signal peptide and endopeptidase cleavage site, three predicted glycosylation sites and a putative transmembrane domain. The deduced L protein sequence shows similarities with the L proteins of other plant rhabdoviruses and contains polymerase module motifs characteristic for RNA-dependent RNA polymerases of negative-strand RNA viruses. Phylogenetic analysis of this motif among rhabdoviruses placed LNYV in a group with other sequenced cytorhabdoviruses, most closely related to Strawberry crinkle virus. © 2005 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • LNYV
  • Phylogeny
  • Plant rhabdovirus

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Authors

  • Ralf DietzgenThe University of Queensland, Queensland Alliance for Agriculture and Food Innovation

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  • Ben Callaghan

  • Thierry Wetzel

  • James L. Dale

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