Which role for nitric oxide in symbiotic N2-fixing nodules: toxic by-product or useful signaling/metabolic intermediate?
| Autor: | Alain Puppo, Renaud Brouquisse, Claude Bruand, Claude Castella, Eliane Meilhoc, Alexandre Boscari |
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| Přispěvatelé: | Institut Sophia Agrobiotech (ISA), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Recherche Agronomique (INRA), Unité mixte de recherche interactions plantes-microorganismes, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, INRA, Université de Nice-Sophia Antipolis (UNS), Centre National de la Recherche Scientifique (CNRS), National Institute for Applied Sciences (INSA-Toulouse) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
formation des nodules
0106 biological sciences [SDV.SA]Life Sciences [q-bio]/Agricultural sciences nodosité racinaire Plant Science 01 natural sciences Nod factor chemistry.chemical_compound rhizobium métabolisme intermédiaire legume nitric oxide nitrogen fixation symbiosis nitrogénase relation symbiotique oxyde nitrique bactérie 0303 health sciences Vegetal Biology biology fixation de l'azote de l'air Nitrogenase Agricultural sciences Biochemistry flavobacterium fixation de l'azote Nitrogen fixation Rhizobium medicine.symptom symbiose nodule lcsh:Plant culture légumineuse Nitric oxide Rhizobia Mini Review Article 03 medical and health sciences Symbiosis Botany medicine [SDV.BV]Life Sciences [q-bio]/Vegetal Biology lcsh:SB1-1110 sénescence nodulaire 030304 developmental biology azote atmosphérique nodule hypoxique azote symbiotique hypoxie Nodule (medicine) biology.organism_classification chemistry Sciences agricoles Biologie végétale 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science Frontiers in Plant Science, Frontiers, 2013, 4, pp.1-6. ⟨10.3389/fpls.2013.00384⟩ Frontiers in Plant Science (4), 1-6. (2013) Frontiers in Plant Science, Vol 4 (2013) |
| ISSN: | 1664-462X |
| Popis: | International audience; The interaction between legumes and rhizobia leads to the establishment of a symbiotic relationship characterized by the formation of new organs called nodules, in which bacteria have the ability to fix atmospheric nitrogen (N2) via the nitrogenase activity. Significant nitric oxide (NO) production was evidenced in the N2-fixing nodules suggesting that it may impact the symbiotic process. Indeed, NO was shown to be a potent inhibitor of nitrogenase activity and symbiotic N2 fixation. It has also been shown that NO production is increased in hypoxic nodules and this production was supposed to be linked - via a nitrate/NO respiration process - with improved capacity of the nodules to maintain their energy status under hypoxic conditions. Other data suggest that NO might be a developmental signal involved in the induction of nodule senescence. Hence, the questions were raised of the toxic effects versus signaling/metabolic functions of NO, and of the regulation of NO levels compatible with nitrogenase activity. The present review analyses the different roles of NO in functioning nodules, and discusses the role of plant and bacterial (flavo)hemoglobins in the control of NO level in nodules. |
| Databáze: | OpenAIRE |
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