Exploring the genomic traits of fungus-feeding bacterial genus Collimonas

C. Song, R.L. Schmidt, V.C.L. de Jager, Dorota Krzyzanowska, Esmer Jongedijk, Katarina Cankar, J. Beekwilder, Anouk van Veen, W. De Boer, J.A. van Veen, P.V. Garbeva

Research output: Contribution to journal/periodicalArticleScientificpeer-review

213 Downloads (Pure)

Abstract

Background
Collimonas is a genus belonging to the class of Betaproteobacteria and consists mostly of soil bacteria with the ability to exploit living fungi as food source (mycophagy). Collimonas strains differ in a range of activities, including swimming motility, quorum sensing, extracellular protease activity, siderophore production, and antimicrobial activities.

Results
In order to reveal ecological traits possibly related to Collimonas lifestyle and secondary metabolites production, we performed a comparative genomics analysis based on whole-genome sequencing of six strains representing 3 recognized species. The analysis revealed that the core genome represents 43.1 to 52.7 % of the genomes of the six individual strains. These include genes coding for extracellular enzymes (chitinase, peptidase, phospholipase), iron acquisition and type II secretion systems. In the variable genome, differences were found in genes coding for secondary metabolites (e.g. tripropeptin A and volatile terpenes), several unknown orphan polyketide synthase-nonribosomal peptide synthetase (PKS-NRPS), nonribosomal peptide synthetase (NRPS) gene clusters, a new lipopeptide and type III and type VI secretion systems. Potential roles of the latter genes in the interaction with other organisms were investigated. Mutation of a gene involved in tripropeptin A biosynthesis strongly reduced the antibacterial activity against Staphylococcus aureus, while disruption of a gene involved in the biosynthesis of the new lipopeptide had a large effect on the antifungal/oomycetal activities.

Conclusions
Overall our results indicated that Collimonas genomes harbour many genes encoding for novel enzymes and secondary metabolites (including terpenes) important for interactions with other organisms and revealed genomic plasticity, which reflect the behaviour, antimicrobial activity and lifestylesof Collimonas spp.
Original languageEnglish
Article number1103
JournalBMC Genomics
Volume16
DOIs
Publication statusPublished - 2015

Keywords

  • international

Fingerprint Dive into the research topics of 'Exploring the genomic traits of fungus-feeding bacterial genus Collimonas'. Together they form a unique fingerprint.

  • Cite this

    Song, C., Schmidt, R. L., de Jager, V. C. L., Krzyzanowska, D., Jongedijk, E., Cankar, K., Beekwilder, J., van Veen, A., De Boer, W., van Veen, J. A., & Garbeva, P. V. (2015). Exploring the genomic traits of fungus-feeding bacterial genus Collimonas. BMC Genomics, 16, [1103]. https://doi.org/10.1186/s12864-015-2289-3