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. 2015 Sep 4;6:926. doi: 10.3389/fmicb.2015.00926

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Copyright © 2015 García, Alcaraz, Franco and Passerini de Rossi.

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) or licensor 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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DSF production by S. maltophilia strains grown under iron-limited (SSC) and iron rich conditions (SSC-100 μM FeCl₃). DSF production was assayed by measuring the restoration of endoglucanase activity to the Xcc rpfF mutant strain 8523 by culture supernatant extracts obtained using Oasis MAX columns. The results were expressed as units of endoglucanase. Results represent the mean ± standard deviation of one representative experiment. Asterisks indicate significant difference (^*p < 0.01).