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dc.contributor.authorSalazar-Parra, Carolina-
dc.contributor.authorAranjuelo, Iker-
dc.contributor.authorPascual Elizalde, Inmaculada-
dc.contributor.authorErice, Gorka-
dc.contributor.authorSanz-Sáez, Álvaro-
dc.contributor.authorAguirreolea, Jone-
dc.contributor.authorSánchez-Díaz, Manuel-
dc.contributor.authorIrigoyen, Juan José-
dc.contributor.authorAraus, José Luis-
dc.contributor.authorMorales Iribas, Fermín-
dc.identifier.citationJournal of Plant Physiology 174: 97-109 (2015)es_ES
dc.description46 Pags.- 4 Figs.- 4 Tabls.es_ES
dc.description.abstractAlthough plant performance under elevated CO2 has been extensively studied in the past little is known about photosynthetic performance changing simultaneously CO2, water availability and temperature conditions. Moreover, despite of its relevancy in crop responsiveness to elevated CO2 conditions, plant level C balance is a topic that, comparatively, has received little attention. In order to test responsiveness of grapevine photosynthetic apparatus to predicted climate change conditions, grapevine (Vitis vinifera L. cv. Tempranillo) fruit-bearing cuttings were exposed to different CO2 (elevated, 700 ppm versus ambient, ca. 400 ppm), temperature (ambient versus elevated, ambient +4 °C) and irrigation levels (partial versus full irrigation). Carbon balance was followed monitoring net photosynthesis (AN, C gain), respiration (RD) and photorespiration (RL) (C losses). Modification of environment 13C isotopic composition (δ13C) under elevated CO2 (from -10.30 to -24.93 ‰) enabled the further characterization of C partitioning into roots, cuttings, shoots, petioles, leaves, rachides and berries. Irrespective of irrigation level and temperature, exposure to elevated CO2 induced photosynthetic acclimation of plants. C/N imbalance reflected the inability of plants grown at 700 ppm CO2 to develop strong C sinks. Partitioning of labeled C to storage organs (main stem and roots) did not avoid accumulation of labeled photoassimilates in leaves, affecting negatively Rubisco carboxylation activity. The study also revealed that, after 20 days of treatment, no oxidative damage to chlorophylls or carotenoids was observed, suggesting a protective role of CO2 either at current or elevated temperatures against the adverse effect of water stress.es_ES
dc.description.sponsorshipWe thank Spanish Ministry of Science and Innovation (BFU2008-01405/BFI), Fundación Universitaria de Navarra (Plan de Investigación de la Universidad de Navarra), Caja Navarra and Gobierno de Aragón (A03 research group) for financial support, Asociación de Amigos de la Universidad de Navarra for Carolina Salazar-Parra grant. Iker Aranjuelo was the recipient of a “Ramon y Cajal” research grant funded by the Spanish Economy and Competitiveness Ministry.es_ES
dc.subjectCarbon balancees_ES
dc.subjectClimate changees_ES
dc.titleCarbon balance, partitioning and photosynthetic acclimation in fruit-bearing grapevine (Vitis vinifera L. cv. Tempranillo) grown under simulated climate change (elevated CO2, elevated temperature and moderate drought) scenarios in temperature gradient greenhouseses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderMinisterio de Ciencia e Innovación (España)-
dc.contributor.funderFundación Universitaria de Navarra-
dc.contributor.funderCaja Navarra-
dc.contributor.funderNafarroako Gobernua-
dc.contributor.funderAsociación de Amigos de la Universidad de Navarra-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
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