Evidence of a Large Diversity of N-acyl-Homoserine Lactones in Symbiotic Vibrio fischeri Strains Associated with the Squid Euprymna scolopes

Léa Girard (1) , Elodie Blanchet (1) , Didier Stien (1) , Julia Baudart (1) , Marcelino Suzuki (1) , Raphaël Lami (1)

1 LBBM - Laboratoire de Biodiversité et Biotechnologies Microbiennes

Vibrio fischeri possesses a complex AHL-mediated Quorum-sensing (QS) system including two pathways, LuxI/R (3-oxo-C6-HSL and C6-HSL) and AinS/R (C8-HSL), which are important for the regulation of physiological traits. Diverse QS-dependent functional phenotypes have been described in V. fischeri; however, AHL diversity is still underestimated. In the present study, we investigated AHL diversity in five symbiotic V. fischeri strains with distinct phenotypic properties using UHPLC-HRMS/MS. The results obtained (1) revealed an unexpectedly high diversity of signaling molecules, (2) emphasized the complexity of QS in V. fischeri, and (3) highlight the importance of understanding the specificity of AHL-mediated QS.

Mots clés: Quorum sensing; N-acyl-homoserine lactone; Vibrio fischeri; Euprymna scolopes

Domaines: Autre

Léa Girard, Elodie Blanchet, Didier Stien, Julia Baudart, Marcelino Suzuki, et al.. Evidence of a Large Diversity of N-acyl-Homoserine Lactones in Symbiotic Vibrio fischeri Strains Associated with the Squid Euprymna scolopes. Microbes and environments / JSME, 2019, 34 (1), pp.99-103. ⟨10.1264/jsme2.ME18145⟩. ⟨hal-02331764⟩