Journal Article

Comparative genomics and metabolic profiling of the genus Lysobacter

Raaijmakers, Jos M., Kobayashi, Donald, de Bruijn, Irene, de Jager, Victor, Patel, Nrupali, Cheng, Xu, Postma, Joeke, Dorrestein, Pieter C., Expósito, Ruth Gómez, Watrous, Jeramie

2015

Overview

Background Lysobacter species are Gram-negative bacteria widely distributed in soil, plant and freshwater habitats. Lysobacter owes its name to the lytic effects on other microorganisms. To better understand their ecology and interactions with other (micro)organisms, five Lysobacter strains representing the four species L. enzymogenes, L. capsici , L. gummosus and L. antibioticus were subjected to genomics and metabolomics analyses. Results Comparative genomics revealed a diverse genome content among the Lysobacter species with a core genome of 2,891 and a pangenome of 10,028 coding sequences. Genes encoding type I, II, III, IV, V secretion systems and type IV pili were highly conserved in all five genomes, whereas type VI secretion systems were only found in L. enzymogenes and L. gummosus . Genes encoding components of the flagellar apparatus were absent in the two sequenced L. antibioticus strains . The genomes contained a large number of genes encoding extracellular enzymes including chitinases, glucanases and peptidases. Various nonribosomal peptide synthase (NRPS) and polyketide synthase (PKS) gene clusters encoding putative bioactive metabolites were identified but only few of these clusters were shared between the different species. Metabolic profiling by imaging mass spectrometry complemented, in part, the in silico genome analyses and allowed visualisation of the spatial distribution patterns of several secondary metabolites produced by or induced in Lysobacter species during interactions with the soil-borne fungus Rhizoctonia solani . Conclusions Our work shows that mining the genomes of Lysobacter species in combination with metabolic profiling provides novel insights into the genomic and metabolic potential of this widely distributed but understudied and versatile bacterial genus.

• Publisher: BioMed Central,BioMed Central Ltd,Springer Nature B.V
• Subject: Analysis / Animal Genetics and Genomics / Aquatic habitats / Bacteria / Bacterial genetics / Biomedical and Life Sciences / Comparative genomics / Distribution patterns / Freshwater environments / Freshwater plants / Genomics / Life Sciences / Lysobacter / Lysobacter - genetics / Lysobacter - metabolism / Lysobacter - physiology / Mass spectrometry / Mass spectrometry imaging / Metabolites / Metabolomics / Microarrays / Microbial Genetics and Genomics / Microbial interactions / Microorganisms / Movement / Multigene Family / Nonribosomal peptide synthesis / Plant Genetics and Genomics / Prokaryote microbial genomics / Proteomics / Research Article / Rhizoctonia - physiology / Secondary metabolites / Spatial distribution