New strains of chickpea chlorotic dwarf virus discovered on diseased papaya and tomato plants in Burkina Faso

Arch Virol. 2017 Jun;162(6):1791-1794. doi: 10.1007/s00705-017-3262-z. Epub 2017 Feb 22.

Abstract

This is the first description of full genome sequences of chickpea chlorotic dwarf virus (CpCDV; genus Mastrevirus; family Geminiviridae) identified in papaya and tomato plants sampled in Burkina Faso. The CpCDV full genome sequences from papaya and tomato share the highest pairwise sequence identity (84% and 93.5%) with Sudanese isolates of the CpCDV-K and CpCDV-M strains, respectively. Based on the strain demarcation threshold (>94% identity) for mastreviruses, we propose two new strains, CpCDV-Q and CpCDV-R, identified in papaya and tomato, respectively. Phylogenetic analysis confirmed that the sequences belong to a distinct clade of the highly diverse population of CpCDVs. Evidence of inter-strain recombination provided more support for the important role of recombination in CpCDV evolution. The discovery of CpCDV on papaya, a previously unsuspected host, raises many questions about the natural and potential host range of this dicot-infecting mastrevirus species that is reported to be emerging worldwide.

MeSH terms

  • Base Sequence
  • Burkina Faso
  • Carica / virology*
  • Cicer / virology*
  • Geminiviridae / classification
  • Geminiviridae / genetics
  • Geminiviridae / isolation & purification*
  • Genome, Viral
  • Molecular Sequence Data
  • Phylogeny
  • Plant Diseases / virology*
  • RNA, Viral / genetics

Substances

  • RNA, Viral