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Secondary Metabolites Produced during the Germination ofStreptomyces coelicolor

M. Čihák, Z. Kameník, K. Šmídová, N. Bergman, O. Benada, O. Kofroňová, K. Petříčková, J. Bobek,

. 2017 ; 8 (-) : 2495. [pub] 20171213

Language English Country Switzerland

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc18010089

Spore awakening is a series of actions that starts with purely physical processes and continues via the launching of gene expression and metabolic activities, eventually achieving a vegetative phase of growth. In spore-forming microorganisms, the germination process is controlled by intra- and inter-species communication. However, in theStreptomycesclade, which is capable of developing a plethora of valuable compounds, the chemical signals produced during germination have not been systematically studied before. Our previously published data revealed that several secondary metabolite biosynthetic genes are expressed during germination. Therefore, we focus here on the secondary metabolite production during this developmental stage. Using high-performance liquid chromatography-mass spectrometry, we found that the sesquiterpenoid antibiotic albaflavenone, the polyketide germicidin A, and chalcone are produced during germination of the model streptomycete,S. coelicolor. Interestingly, the last two compounds revealed an inhibitory effect on the germination process. The secondary metabolites originating from the early stage of microbial growth may coordinate the development of the producer (quorum sensing) and/or play a role in competitive microflora repression (quorum quenching) in their nature environments.

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