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. 2019 Jan 22;10:3. doi: 10.3389/fmicb.2019.00003

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Copyright © 2019 Vuono, Read, Hemp, Sullivan, Arnone, Neveux, Blank, Loney, Miceli, Winkler, Chakraborty, Stahl and Grzymski.

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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The effects of high resource (left; range of lactate concentrations with 12 mM NO₃⁻) and low resource (right; range of lactate concentrations with 1.2 mM NO₃⁻) concentrations with the same C:NO₃⁻ ratio on pathway selection in I. calvum C5. (A) Production of N₂O-N and net change of NH₄⁺ over a 100-h incubation period at 30°C. Each bar represents the average of 8–10 replicates per treatment (Supplementary Table S2). (B) Fraction of dissimilated N by pathway. (C) Growth rates for each corresponding treatment. The x-axis label defines lactate concentration and C:NO₃⁻ ratio in parentheses.