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. 2020 Sep 4;11:1313. doi: 10.3389/fpls.2020.01313

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Copyright © 2020 Berger, Boscari, Horta Araújo, Maucourt, Hanchi, Bernillon, Rolin, Puppo and Brouquisse

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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NR activity and NO production during the Medicago truncatula symbiosis. Short term kinetic 14 dpi (A), long term kinetic 8 wpi (B). The nitrate reductase activity is expressed in nmol per min per g of fresh weight. The fluorescence intensity of the NO production was measured using the DAF-2 fluorescent probe. Data are means ± SE of three biological replicates. Each measure was realized in three technical replicates. dpi, day post inoculation; FU, fluorescence unit; wpi, week post inoculation.