Reactive oxygen species, nitric oxide and glutathione: a key role in the establishment of the legume–Rhizobium symbiosis?
| Autor: | Emmanuel Baudouin, Ghislaine Van de Sype, Judith Harrison, Pierre Frendo, Alexandre Jamet, Danièle Touati, Alain Puppo, Renata Santos, Didier Hérouart |
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| Přispěvatelé: | Laboratoire de Biologie Végétale et Microbiologie, Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2002 |
| Předmět: |
Rhizobiaceae
Physiology [SDV]Life Sciences [q-bio] [SDV.BC]Life Sciences [q-bio]/Cellular Biology Plant Science medicine.disease_cause Rhizobia Nitric oxide 03 medical and health sciences chemistry.chemical_compound Symbiosis Genetics medicine ComputingMilieux_MISCELLANEOUS 030304 developmental biology chemistry.chemical_classification 0303 health sciences Reactive oxygen species biology 030306 microbiology food and beverages [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biology Glutathione biology.organism_classification [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biomolecules [q-bio.BM] Respiratory burst Cell biology chemistry Biochemistry Oxidative stress |
| Zdroj: | Plant Physiology and Biochemistry Plant Physiology and Biochemistry, Elsevier, 2002, 40 (6-8), pp.619-624. ⟨10.1016/S0981-9428(02)01415-8⟩ |
| ISSN: | 0981-9428 |
| Popis: | Reactive oxygen species are generated in the first steps of the Rhizobium–legume symbiosis. Superoxide radicals and hydrogen peroxide have been detected in infection threads and there is also evidence of the presence of nitric oxide in young alfalfa nodules. Moreover, rhizobial mutants, with a reduced antioxidant defense, exhibit an impaired capacity to nodulate. The oxidative burst generated in response to symbiotic infection can be consistent with rhizobia being initially perceived as invaders by the plant; in this framework, it may be correlated with the existence of abortive infections. However, the burst appears to be also involved in the expression of early nodulins associated with successful infections. Thus, in parallel to its involvement in defense processes, a positive role for the oxidative burst (including nitric oxide) in the establishment of the symbiotic interaction can also be proposed. The burst could trigger the expression of plant and/or bacterial genes which are essential for the nodulation process. In this framework, glutathione and homoglutathione could be key intermediates for gene expression, via the modification of the redox balance. Thus, the oxidative burst may have a dual role in the establishment of the symbiosis. © 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved. |
| Databáze: | OpenAIRE |
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