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Article Abstract
Brown macroalgae are an essential component of temperate coastal ecosystems and a growing economic sector. They harbor diverse microbial communities that regulate algal development and health. This algal holobiont is dynamic and achieves equilibrium a complex network of microbial and host interactions. We now report that bacterial and fungal endophytes associated with four brown algae (, , , and produce metabolites that interfere with bacterial autoinducer-2 quorum sensing, a signaling system implicated in virulence and host colonization. Additionally, we performed co-culture experiments combined to a metabolomic approach and demonstrated that microbial interactions influence production of metabolites, including metabolites involved in quorum sensing. Collectively, the data highlight autoinducer-2 quorum sensing as a key metabolite in the complex network of interactions within the algal holobiont.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6685064 | PMC |
| http://dx.doi.org/10.3389/fmicb.2019.01693 | DOI Listing |
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