The genome sequence of Brassica campestris chrysovirus 1, a novel putative plant-infecting tripartite chrysovirus

Arch Virol. 2017 Apr;162(4):1107-1111. doi: 10.1007/s00705-016-3196-x. Epub 2016 Dec 21.

Abstract

A putative chrysovirus recovered from Brassica campestris var. purpurea and provisionally named "Brassica campestris chrysovirus 1" (BrcCV1) was sequenced. The genome of the putative BrcCV1 consists of three double-stranded RNAs (dsRNAs) comprising 3,639 (dsRNA 1), 3,567 (dsRNA 2) and 3,337 (dsRNA 3) base pairs, respectively, each containing a single open reading frame (ORF 1-3). The putative proteins encoded by ORF 1-3 show homologies to RdRp, CP and chryso-P3 of approved or tentative chrysoviruses. In addition, the three dsRNAs of BrcCV1 contain highly conserved 5' and 3' untranslated regions (UTRs) in a way similar to known chrysoviruses. In a phylogenetic tree based on the conserved amino acid sequences of the RdRps of chrysoviruses, totiviruses and partitiviruses, the putative BrcCV1 formed a separate clade with Raphanus sativus chrysovirus 1 (RasCV1), a putative trisegmented, plant-infecting chrysovirus, in the family Chrysoviridae.

MeSH terms

  • 3' Untranslated Regions
  • Base Sequence
  • Brassica / virology*
  • Genome, Viral*
  • Open Reading Frames
  • Phylogeny
  • Plant Diseases / virology*
  • RNA Viruses / classification
  • RNA Viruses / genetics*
  • RNA Viruses / isolation & purification*
  • RNA Viruses / physiology
  • RNA, Viral / genetics
  • Viral Proteins / genetics

Substances

  • 3' Untranslated Regions
  • RNA, Viral
  • Viral Proteins