An alternative nitrogenase is not expressed in molybdenum-deficient legume root nodules
Three legume root nodule bacteria systems (Medicago polymorpha L. -Rhizobium meliloti, Ornithopus sativus Brot. -Bradyrhizobium lupini and Trifolium subterraneum L.- Rhizobium leguminosarum by. trifolii) were grown in solution culture under conditions likely to lead to the production of alternative...
| Veröffentlicht in: | The New phytologist. - 1979. - 118(1991), 2 vom: 20. Juni, Seite 303-308 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
1991
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| Zugriff auf das übergeordnete Werk: | The New phytologist |
| Schlagworte: | Journal Article Alternative nitrogenase legume nodules molybdenum deficiency vanadium |
| Zusammenfassung: | Three legume root nodule bacteria systems (Medicago polymorpha L. -Rhizobium meliloti, Ornithopus sativus Brot. -Bradyrhizobium lupini and Trifolium subterraneum L.- Rhizobium leguminosarum by. trifolii) were grown in solution culture under conditions likely to lead to the production of alternative nitrogenases (molybdenum-deficient, or molybdenum-deficient but supplemented with vanadium). Addition of 1 μM molybdenum produced significant responses in both nodule and top weights while 2 μM vanadium did not. Ethane, which is produced as well as ethylene when acetylene is reduced by vanadium nitrogenase or nitrogenase-3 from Azotobacter, was not found in significant amounts during assays of acetylene reduction in either molybdenum-deficient or molybdenum-deficient, vanadium-supplemented treatments, suggesting that no non-molybdenum nitrogenase was produced by these root nodule bacteria |
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| Beschreibung: | Date Revised 20.04.2021 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/j.1469-8137.1991.tb00981.x |