Bacterial–Fungal Interactions in the Kelp Endomicrobiota Drive Autoinducer-2 Quorum Sensing

Autor: Anne Tourneroche, Raphaël Lami, Cédric Hubas, Elodie Blanchet, Marine Vallet, Karine Escoubeyrou, Alain Paris, Soizic Prado
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Frontiers in Microbiology, Vol 10 (2019)
Druh dokumentu: article
ISSN: 1664-302X
DOI: 10.3389/fmicb.2019.01693
Popis: 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 via a complex network of microbial and host interactions. We now report that bacterial and fungal endophytes associated with four brown algae (Ascophyllum nodosum, Pelvetia canaliculata, Laminaria digitata, and Saccharina latissima) 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.
Databáze: Directory of Open Access Journals