Planomonospora: a Metabolomics Perspective on an Underexplored Actinobacteria Genus

Author:

Zdouc Mitja M.,Iorio Marianna,Maffioli Sonia I.,Crüsemann Max,Donadio Stefano,Sosio Margherita

Abstract

ABSTRACTDespite an excellent track record, microbial drug discovery suffers from high rates of re-discovery. Better workflows for the rapid investigation of complex extracts are needed to increase throughput and allow early prioritization of samples. In addition, systematic characterization of poorly explored strains is seldomly performed. Here, we report a metabolomic study of 72 isolates belonging to the rare actinomycete genusPlanomonospora, using a workflow of open access tools to investigate its secondary metabolites. The results reveal a correlation of chemical diversity and strain phylogeny, with classes of metabolites exclusive to certain phylogroups. We were able to identify previously reportedPlanomonosporametabolites, including the ureylene-containing oligopeptide antipain, the thiopeptide siomycin including new congeners and the ribosomally synthesized peptides sphaericin and lantibiotic 97518. In addition, we found thatPlanomonosporastrains can produce the siderophore desferrioxamine or a salinichelin-like peptide. Analysis of the genomes of three newly sequenced strains led to the detection of 47 gene cluster families, of which several were connected to products found by LC-MS/MS profiling. This study demonstrates the value of metabolomic studies to investigate poorly explored taxa and provides a first picture of the biosynthetic capabilities of the genusPlanomonospora.

Publisher

Cold Spring Harbor Laboratory

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