Genomic analysis of Oryctes rhinoceros virus reveals genetic relatedness to Heliothis zea virus I

Y. Wang, M.M. van Oers, A.M. Crawford, J.M. Vlak, J.A. Jehle

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)

Abstract

Oryctes rhinoceros virus (OrV) is an unassigned invertebrate dsDNA virus with enveloped and rod-shaped virions. Two cloned PstI fragments, C and D, of OrV DNA have been sequenced, consisting of 19,805 and 17,146¿bp, respectively, and comprising about 30% of the OrV genome. For each of the two fragments, 20 open reading frames (ORFs) of 150 nucleotides or greater with no or minimal overlap were predicted. Ten of the predicted 40 ORFs revealed significant similarities to Heliothis zea virus 1 (HzV-1) ORFs, of which five, lef-4, lef-5, pif-2, dnapol and ac81, are homologues of conserved core genes in the family Baculoviridae, and one is homologous to baculovirus rr1. A baculovirus odv-e66 homologue is also present in OrV. Five ORFs encode proteins homologous to cellular thymidylate synthase (TS), patatin-like phospholipase, mitochondrial carrier protein, Ser/Thr protein phosphatase, and serine protease, respectively. TS is phylogenetically related to those of eukarya and nucleo-cytoplasmic large dsDNA viruses. However, the remaining 25 ORFs have poor or no sequence matches with the current databases. Both the gene content of the sequenced fragments and the phylogenetic analyses of the viral DNA polymerase suggest that OrV is most closely related to HzV-1. These findings and the re-evaluation of the relationship of HzV-1 to baculoviruses suggest that a new virus genus, Nudivirus, should be established, containing OrV and HzV-1, which are genetically related to members of the family Baculoviridae.
Original languageEnglish
Pages (from-to)519-531
Number of pages13
JournalArchives of Virology
Volume152
Issue number3
DOIs
Publication statusPublished - 2007

Keywords

  • nuclear polyhedrosis-virus
  • spot syndrome virus
  • rhabdionvirus-oryctes
  • baculovirus genome
  • dna viruses
  • psi-blast
  • sequence
  • replication
  • identification
  • coleoptera

Fingerprint Dive into the research topics of 'Genomic analysis of Oryctes rhinoceros virus reveals genetic relatedness to Heliothis zea virus I'. Together they form a unique fingerprint.

Cite this