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. 2019 Oct 9;10:2311. doi: 10.3389/fmicb.2019.02311

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Copyright © 2019 Scott, Sueiro-Olivares, Ahmed, Heddergott, Zhao, Thomas, Bromley, Latgé, Krappmann, Fowler, Bignell and Amich.

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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Pseudomonas aeruginosa produces VSCs from artificial sputum medium (ASM) and from mucins. (A) Growth of P. aeruginosa ATCC 9027 and PAO1 strains on ASM triggered distal A. fumigatus (A. f) growth. A. fumigatus needed supplementation of methionine to the ASM medium to trigger distal growth (i.e., to produce VSCs). (B) A. fumigatus wild-type and ΔcysBΔcysD strains could exploit mucins as the sole sulfur source. (C) When grown on mucins as the sole S-source wild-type P. aeruginosa, but not A. fumgiatus, produced VSCs, which triggered distal A. fumigatus growth. Plates were incubated at 37°C for 3 days.