De Novo Assembly and Genome Analyses of the Marine-Derived Scopulariopsis brevicaulis Strain LF580 Unravels Life-Style Traits and Anticancerous Scopularide Biosynthetic Gene Cluster

PLoS One. 2015 Oct 27;10(10):e0140398. doi: 10.1371/journal.pone.0140398. eCollection 2015.

Abstract

The marine-derived Scopulariopsis brevicaulis strain LF580 produces scopularides A and B, which have anticancerous properties. We carried out genome sequencing using three next-generation DNA sequencing methods. De novo hybrid assembly yielded 621 scaffolds with a total size of 32.2 Mb and 16298 putative gene models. We identified a large non-ribosomal peptide synthetase gene (nrps1) and supporting pks2 gene in the same biosynthetic gene cluster. This cluster and the genes within the cluster are functionally active as confirmed by RNA-Seq. Characterization of carbohydrate-active enzymes and major facilitator superfamily (MFS)-type transporters lead to postulate S. brevicaulis originated from a soil fungus, which came into contact with the marine sponge Tethya aurantium. This marine sponge seems to provide shelter to this fungus and micro-environment suitable for its survival in the ocean. This study also builds the platform for further investigations of the role of life-style and secondary metabolites from S. brevicaulis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Depsipeptides / genetics
  • Genome
  • High-Throughput Nucleotide Sequencing
  • Molecular Sequence Annotation*
  • Peptide Synthases / genetics*
  • Phylogeny*
  • Protein Structure, Tertiary / genetics
  • Scopulariopsis / genetics*
  • Scopulariopsis / metabolism

Substances

  • Depsipeptides
  • scopularide A
  • scopularide B
  • Peptide Synthases
  • non-ribosomal peptide synthase

Grants and funding

Funded by European Union Seventh Framework Program FP7/2007–2013 under grant agreement number 265926.