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. 2016 Apr 8;7:472. doi: 10.3389/fpls.2016.00472

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Copyright © 2016 Thalineau, Truong, Berger, Fournier, Boscari, Wendehenne and Jeandroz.

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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Working model. Results from the present work indicate that RNAi::MtNIA1/2 and 35S::GSNOR transformed roots are, respectively, more susceptible and more resistant to A. euteiches (1). NR activity and NO₃^- content were impacted by GSNOR overexpression, indicating a possible effect of GSNOR on basal NO₃^- transport/assimilation (2). NO₃^- availability in the medium causes quantitative modulation of ROS/RNS/NO content and affects their balance (3). Infection by A. euteiches decreases root NO₃^- content (4) and induces higher ROS levels (5). According to the literature superoxyde (O₂^⋅-), by reacting with NO to form peroxynitrite, can influence the concentration of NO available for signaling (6). ^∗: GSNO was shown to regulate NO₃^- uptake through transcriptional regulation of NRT2.1 (Frungillo et al., 2014).