Nitric oxide: a multifaceted regulator of the nitrogen-fixing symbiosis

Journal of Experimental Botany
Imène HichriRenaud Brouquisse

Abstract

The specific interaction between legumes and Rhizobium-type bacteria leads to the establishment of a symbiotic relationship characterized by the formation of new differentiated organs named nodules, which provide a niche for bacterial nitrogen (N2) fixation. In the nodules, bacteria differentiate into bacteroids with the ability to fix atmospheric N2 via nitrogenase activity. As nitrogenase is strongly inhibited by oxygen, N2 fixation is made possible by the microaerophilic conditions prevailing in the nodules. Increasing evidence has shown the presence of NO during symbiosis, from early interaction steps between the plant and the bacterial partners to N2-fixing and senescence steps in mature nodules. Both the plant and the bacterial partners participate in NO synthesis. NO was found to be required for the optimal establishment of the symbiotic interaction. Transcriptomic analysis at an early stage of the symbiosis showed that NO is potentially involved in the repression of plant defence reactions, favouring the establishment of the plant-microbe interaction. In mature nodules, NO was shown to inhibit N2 fixation, but it was also demonstrated to have a regulatory role in nitrogen metabolism, to play a beneficial metabolic funct...Continue Reading

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Citations

Feb 3, 2016·Frontiers in Plant Science·Frédérique C Guinel
Dec 1, 2015·Frontiers in Plant Science·Marcela SimontacchiGuillermo E Santa-María
Apr 20, 2016·Frontiers in Plant Science·Isabelle DamianiAlexandre Boscari
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Dec 5, 2019·Microbial Biotechnology·Kristina Lindström, Seyed Abdollah Mousavi
Oct 1, 2019·Plant Signaling & Behavior·Maryam SeifikalhorTao Li
Jun 26, 2020·Frontiers in Plant Science·Santiago SignorelliJorge Monza
Dec 19, 2019·Frontiers in Plant Science·Camille SyskaAlexandre Boscari
Jun 28, 2017·Planta·Anthoni PellizzaroMarie-Christine Morère-Le Paven
May 28, 2019·Journal of Experimental Botany·Laura C Terrón-CameroMaría C Romero-Puertas
Sep 3, 2020·Journal of Experimental Botany·Antoine BergerRenaud Brouquisse
Sep 15, 2019·Plant Physiology and Biochemistry : PPB·Domenica FarciDario Piano
Sep 22, 2019·Nitric Oxide : Biology and Chemistry·Zs KolbertJ T Hancock
Apr 16, 2020·Journal of Advanced Research·Francisco J Corpas, José M Palma
Jan 17, 2021·Journal of Experimental Botany·Manuel A Matamoros, Manuel Becana
Apr 2, 2021·Horticulture Research·Chengliang SunXianyong Lin
Jul 6, 2021·Frontiers in Plant Science·Ylenia VittozziMaurizio Chiurazzi
Sep 3, 2021·Microbes and Environments·Mitsutaka FukudomeToshiki Uchiumi

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