High-Quality Genome Assembly of Peronospora destructor, the Causal Agent of Onion Downy Mildew

Mol Plant Microbe Interact. 2020 May;33(5):718-720. doi: 10.1094/MPMI-10-19-0280-A. Epub 2020 Apr 1.

Abstract

Peronospora destructor is an obligate biotrophic oomycete that causes downy mildew on onion (Allium cepa). Onion is an important crop worldwide, but its production is affected by this pathogen. We sequenced the genome of P. destructor using the PacBio sequencing platform, and de novo assembly resulted in 74 contigs with a total contig size of 29.3 Mb and 48.48% GC content. Here, we report the first high-quality genome sequence of P. destructor and its comparison with the genome assemblies of other oomycetes. The genome is a very useful resource to serve as a reference for analysis of P. destructor isolates and for comparative genomic studies of the biotrophic oomycetes.

Keywords: Peronospora destructor; downy mildew; genome; onion; pathogen.

MeSH terms

  • Genome
  • Onions / microbiology*
  • Peronospora / genetics*
  • Plant Diseases / microbiology*