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The planctomycete Stieleria maiorica Mal15 employs stieleriacines to alter the species composition in marine biofilms.
Kallscheuer, Nicolai Jeske, Olga Sandargo, Birthe Boedeker, Christian Wiegand, Sandra Bartling, Pascal Jogler, Mareike Rohde, Manfred Petersen, Jörn Medema, Marnix H
Kallscheuer, Nicolai
Jeske, Olga
Sandargo, Birthe
Boedeker, Christian
Wiegand, Sandra
Bartling, Pascal
Jogler, Mareike
Rohde, Manfred
Petersen, Jörn
Medema, Marnix H
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2020-06-12
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Bacterial strains of the phylum Planctomycetes occur ubiquitously, but are often found on surfaces of aquatic phototrophs, e.g. alga. Despite slower growth, planctomycetes are not outcompeted by faster-growing bacteria in biofilms on such surfaces; however, strategies allowing them to compensate for slower growth have not yet been investigated. Here, we identified stieleriacines, a class of N-acylated tyrosines produced by the novel planctomycete Stieleria maiorica Mal15T, and analysed their effects on growth of the producing strain and bacterial species likely co-occurring with strain Mal15T. Stieleriacines reduced the lag phase of Mal15T and either stimulated or inhibited biofilm formation of two bacterial competitors, indicating that Mal15T employs stieleriacines to specifically alter microbial biofilm composition. The genetic organisation of the putative stieleriacine biosynthetic cluster in strain Mal15T points towards a functional link of stieleriacine biosynthesis to exopolysaccharide-associated protein sorting and biofilm formation.
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Commun Biol. 2020;3(1):303. Published 2020 Jun 12. doi:10.1038/s42003-020-0993-2.
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en
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2399-3642
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Attribution-NonCommercial-ShareAlike 4.0 International