The complete genome sequence of Bacillus velezensis 9912D reveals its biocontrol mechanism as a novel commercial biological fungicide agent

J Biotechnol. 2017 Apr 10:247:25-28. doi: 10.1016/j.jbiotec.2017.02.022. Epub 2017 Feb 21.

Abstract

A Bacillus sp. 9912 mutant, 9912D, was approved as a new biological fungicide agent by the Ministry of Agriculture of the People's Republic of China in 2016 owing to its excellent inhibitory effect on various plant pathogens and being environment-friendly. Here, we present the genome of 9912D with a circular chromosome having 4436 coding DNA sequences (CDSs), and a circular plasmid encoding 59 CDSs. This strain was finally designated as Bacillus velezensis based on phylogenomic analyses. Genome analysis revealed a total of 19 candidate gene clusters involved in secondary metabolite biosynthesis, including potential new type II lantibiotics. The absence of fengycin biosynthetic gene cluster is noteworthy. Our data offer insights into the genetic, biological and physiological characteristics of this strain and aid in deeper understanding of its biocontrol mechanism.

Keywords: Bacillus methylotrophicus; Bacillus velezensis; Biocontrol; Genome; Secondary metabolite.

MeSH terms

  • Bacillus / genetics*
  • Chromosome Mapping
  • Genome Size
  • Genome, Bacterial*
  • Multigene Family
  • Phylogeny
  • Plasmids / genetics
  • Secondary Metabolism
  • Sequence Analysis, DNA / methods*