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dc.creatorAriz, Idoiaes_ES
dc.creatorCruz, Cristinaes_ES
dc.creatorNeves, Tomées_ES
dc.creatorIrigoyen, J. Juanes_ES
dc.creatorGarcía Olaverri, Carmenes_ES
dc.creatorNogués, Salvadores_ES
dc.creatorAparicio Tejo, Pedro Maríaes_ES
dc.creatorAranjuelo Michelena, Ikeres_ES
dc.date.accessioned2018-09-04T06:43:50Z
dc.date.available2018-09-04T06:43:50Z
dc.date.issued2015
dc.identifier.issn1664-462X (Electronic)
dc.identifier.urihttps://hdl.handle.net/2454/30439
dc.description.abstractThe natural 15N/14N isotope composition (δ15N) of a tissue is a consequence of its N source and N physiological mechanisms in response to the environment. It could potentially be used as a tracer of N metabolism in plants under changing environmental conditions, where primary N metabolism may be complex, and losses and gains of N fluctuate over time. In order to test the utility of δ15N as an indicator of plant N status in N2-fixing plants grown under various environmental conditions, alfalfa (Medicago sativa L.) plants were subjected to distinct conditions of [CO2] (400 vs. 700 μmol mol−1), temperature (ambient vs. ambient +4°C) and water availability (fully watered vs. water deficiency—WD). As expected, increased [CO2] and temperature stimulated photosynthetic rates and plant growth, whereas these parameters were negatively affected by WD. The determination of δ15N in leaves, stems, roots, and nodules showed that leaves were the most representative organs of the plant response to increased [CO2] and WD. Depletion of heavier N isotopes in plants grown under higher [CO2] and WD conditions reflected decreased transpiration rates, but could also be related to a higher N demand in leaves, as suggested by the decreased leaf N and total soluble protein (TSP) contents detected at 700 μmol mol−1 [CO2] and WD conditions. In summary, leaf δ15N provides relevant information integrating parameters which condition plant responsiveness (e.g., photosynthesis, TSP, N demand, and water transpiration) to environmental conditions.en
dc.description.sponsorshipThis work was supported by the Spanish Economy and Competiveness ministry (AGL-2012-37815-CO5-05, AGL2011-30386-C02-02 and Ramón y Cajal research grant) and by the Portuguese FCT (PTDC/BIA-ECS/122214/2010). IA was supported by a postdoctoral Fellowship from the Government of Navarra (Anabasid outgoing Programme) and by a postdoctoral Fellowship from the Portuguese FCT (SFRH/BPD/90436/2012).en
dc.format.extent10 p.
dc.format.mimetypeapplication/pdfen
dc.format.mimetypeapplication/zipen
dc.language.isoengen
dc.publisherFrontiers Mediaen
dc.relation.ispartofFrontiers in Plant Science, 6: 574en
dc.rights© 2015 Ariz, Cruz, Neves, Irigoyen, Garcia-Olaverri, Nogués, Aparicio-Tejo and Aranjuelo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectAlfalfaen
dc.subjectClimate changeen
dc.subjectGrowthen
dc.subjectdelta15Nen
dc.subjectPhysiologyen
dc.titleLeaf δ15N as a physiological indicator of the responsiveness of N2-fixing alfalfa plants to elevated CO2, temperature and low water availabilityen
dc.typeinfo:eu-repo/semantics/articleen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Estadística e Investigación Operativaes_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Estatistika eta Ikerketa Operatiboa Sailaeu
dc.contributor.departmentUniversidad Pública de Navarra. Departamento de Ciencias del Medio Naturales_ES
dc.contributor.departmentNafarroako Unibertsitate Publikoa. Natura Ingurunearen Zientziak Sailaeu
dc.contributor.departmentIdAB - Instituto de Agrobiotecnología / Agrobioteknologiako Institutuaes
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.identifier.doi10.3389/fpls.2015.00574
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/6PN/AGL2012-37815en
dc.relation.projectIDinfo:eu-repo/grantAgreement/ES/6PN/AGL2011-30386en
dc.relation.publisherversionhttps://doi.org/10.3389/fpls.2015.00574
dc.type.versioninfo:eu-repo/semantics/publishedVersionen
dc.type.versionVersión publicada / Argitaratu den bertsioaes
dc.contributor.funderGobierno de Navarra / Nafarroako Gobernuaes


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© 2015 Ariz, Cruz, Neves, Irigoyen, Garcia-Olaverri, Nogués, Aparicio-Tejo and Aranjuelo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Except where otherwise noted, this item's license is described as © 2015 Ariz, Cruz, Neves, Irigoyen, Garcia-Olaverri, Nogués, Aparicio-Tejo and Aranjuelo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.