Full metadata record
DC Field | Value | Language |
---|---|---|
dc.creator | Aranjuelo, I. (Iker) | - |
dc.creator | Irigoyen, J.J. (Juan Jose) | - |
dc.creator | Nogues, S. (Salvador) | - |
dc.creator | Sanchez-Diaz, M. (Manuel) | - |
dc.date.accessioned | 2012-09-20T16:16:14Z | - |
dc.date.available | 2012-09-20T16:16:14Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Aranjuelo I, Irigoyen JJ, Nogués S, Sánchez-Díaz M. Elevated CO2 and water-availability effect on gas exchange and nodule development in N2-fixing alfalfa plants. Environ Exp Bot 2009 1;65(1):18-26. | es_ES |
dc.identifier.issn | 0098-8472 | - |
dc.identifier.uri | https://hdl.handle.net/10171/23155 | - |
dc.description.abstract | N2-fixing alfalfa plants were grown in controlled conditions at different CO2 levels (350 μmol mol−1versus 700 μmol mol−1) and water-availability conditions (WW, watered at maximum pot water capacity versus WD, watered at 50% of control treatments) in order to determine the CO2 effect (and applied at two water regimes) on plant growth and nodule activity in alfalfa plants. The CO2 stimulatory effect (26% enhancement) on plant growth was limited to WW plants, whereas no CO2 effect was observed in WD plants. Exposure to elevated CO2 decreased Rubisco carboxylation capacity of plants, caused by a specific reduction in Rubisco (EC 4.1.1.39) concentration (11% in WW and 43% in WD) probably explained by an increase in the leaf carbohydrate levels. Plants grown at 700 μmol mol−1 CO2 maintained control photosynthetic rates (at growth conditions) by diminishing Rubisco content and by increasing nitrogen use efficiency. Interestingly, our data also suggest that reduction in shoot N demand (reflected by the TSP and especially Rubisco depletion) affected negatively nodule activity (malate dehydrogenase, EC 1.1.1.37, and glutamate-oxaloacetate transaminase, EC 2.6.1.1, activities) particularly in water-limited conditions. Furthermore, nodule DM and TSS data revealed that those nodules were not capable to overcome C sink strength limitations. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Pergamon-Elsevier Science | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | Acclimation | es_ES |
dc.subject | C sink strength | - |
dc.subject | Climate change | - |
dc.subject | Medicago sativa | - |
dc.subject | Nodule metabolism | - |
dc.subject | Photosynthetic acclimation | - |
dc.title | Elevated CO2 and water availability effect on gas exchange and nodule development in N2-fixing alfalfa plants | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.relation.publisherversion | http://www.sciencedirect.com/science/article/pii/S0098847208000774 | es_ES |
dc.type.driver | info:eu-repo/semantics/article | es_ES |
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