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. 2019 Aug 13;10:1866. doi: 10.3389/fmicb.2019.01866

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Copyright © 2019 Gallardo-Benavente, Carrión, Todd, Pieretti, Seabra, Durán, Rubilar, Pérez-Donoso and Quiroz.

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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VSCs produced by P. fragi GC01 from SO₄^2–, Cys and Met under biosynthesis conditions. (A) VSC production from sulfur sources with concentrations ranging from 0 to 4 mM after 48 h of incubation. (B) VSC production under biosynthesis conditions with different sulfur sources in the presence or absence of CdCl₂ (20 μg mL^–1) after 48 h. Results represent the average of three biological replicates with their respective standard deviations. Student’s t-test (P < 0.05): Comparison between treatments with and without cadmium (Cd). Statistically significant differences are shown as: ^∗∗∗P < 0.001, ^∗∗P < 0.01, ^*P < 0.05.