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. 2018 Aug 28;9:2014. doi: 10.3389/fmicb.2018.02014

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Copyright © 2018 Leaden, Silva, Ribeiro, dos Santos, Lorenzetti, Alegria, Schulz, Medeiros, Koide and Marques.

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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Survival test of the NA1000 strain exposed to UV light. (A) NA1000 cultures were grown either in M2, DP-treated M2 for 2 h or iron-limited M2 for 2 h or 4 h and then irradiated with 120 J/cm² UV-light. (B) SP0057 cultures were grown either in M2, or iron-limited M2 for 4 h and then irradiated with 60 J/cm² UV-light. (C) GM10 cultures were grown either in M2, or iron-limited M2 for 4 h and then irradiated with 10 J/cm² UV-light. Survival was determined relative to the colony counts at time 0 h, before irradiation (100%). The results shown are the average of three independent experiments. Bars with asterisks (^∗) are significantly different to M2 medium; (^∗∗) indicates that DP-treated M2 and iron-limited M2 are significantly different (P < 0.05) by one-way ANOVA test (A) or Student’s t-test (B,C).