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. 2019 Feb 6;10:188. doi: 10.3389/fmicb.2019.00188

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Copyright © 2019 Sivakumar, Scarascia, Zaouri, Wang, Kaksonen and Hong.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Quorum sensing inhibitors (QSIs) and the effect on AHL production by D. vulgaris and Db. corrodens in saline media. Specific AHL production rate of QSI-treated D. vulgaris and Db. corrodens in saline medium was normalized with that of control (no QSI added) and plotted along y-axis. (A) Effect of bromofuranone on specific AHL production rate exhibited by D. vulgaris planktonic cells in saline medium. (B) Effect of bromofuranone on specific AHL production rate by Db. corrodens planktonic cells in saline medium. (C) Effect of 3-oxo-N on specific AHL production rate exhibited by D. vulgaris planktonic cells in saline medium. (D) Effect of 3-oxo-N on specific AHL production rate exhibited by Db. corrodens planktonic cells in saline medium. (E) Effect of γ-aminobutyric acid (GABA) on specific AHL production rate exhibited by D. vulgaris planktonic cells in saline medium. (F) Effect of GABA on specific AHL production rate exhibited by Db. corrodens planktonic cells in saline medium. Results are presented as mean ± standard deviation (n = 3). Early exp. corresponds to early exponential phase; Middle exp. corresponds to middle exponential phase; Late exp. corresponds to late exponential phase.