Publication: Unravelling the mechanisms that improve photosynthetic performance of N₂-fixing pea plants exposed to elevated [CO₂]
| dc.contributor.author | Aranjuelo Michelena, Iker | |
| dc.contributor.author | Cabrerizo, Pablo María | |
| dc.contributor.author | Aparicio Tejo, Pedro María | |
| dc.contributor.author | Arrese-Igor Sánchez, César | |
| dc.contributor.department | Natura Ingurunearen Zientziak | eu |
| dc.contributor.department | Ciencias del Medio Natural | es_ES |
| dc.contributor.department | IdAB. Instituto de Agrobiotecnología / Agrobioteknologiako Institutua | es_ES |
| dc.date.accessioned | 2020-09-07T08:46:31Z | |
| dc.date.available | 2020-09-07T08:46:31Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | Although the predicted enhanced photosynthetic rates of plants exposed to elevated [CO₂] are expected to increase carbohydrate and plant growth, recent findings have shown a complex regulation of these processes. The aim of this study was to determine the effect of elevated [CO₂] on pathways leading to the main forms of leaf C storage (starch) and export (sucrose) and the implications of this increased [CO₂] on photosynthetic performance of exclusively N2 fixing plants. For this purpose, exclusively N2-fixing pea plants were exposed to elevated [CO₂] (1000 mol mol−1 versus 360 mol mol−1 CO₂). The data obtained highlighted that plants exposed to elevated [CO₂] were capable of maintaining hexose levels (involved in Rubisco down regulation) at control levels with the consequent avoidance of photosynthetic acclimation. More specifically, in plants exposed to elevated [CO₂] there was an increase in the activity of pathways involved in the main forms of leaf C storage (starch) and export (sucrose). Furthermore, the study highlighted that although starch content increased by up to 40% under elevated [CO₂], there was also an increase in the proteins and compounds involved in starch degradation. Such a finding, together with an increase in the activity of proteins involved in sucrose synthesis revealed that these plants up-regulated the sucrose synthesis pathway in order to meet the large nodule photoassimilate requirements. As a consequence, the study highlighted the relevance of controlling the activity of pathways that determine leaf cellular carbohydrate availability and how this is linked with C-demanding organs such as nodules. | en |
| dc.description.sponsorship | This work has been funded by the Spanish National Research and Development Programme (AGL2011-30386-CO2-1 and AGL2011-30386-CO2-2). Iker Aranjuelo was the recipient of a Ramón y Cajal research grant (Ministerio de Economía y Competitividad). | en |
| dc.format.extent | 8 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1016/j.envexpbot.2013.10.020 | |
| dc.identifier.issn | 0098-8472 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/38033 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | Environmental and Experimental Botany, 2014, 99, 167-174 | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/MICINN//AGL2011-30386-C02-01/ES/ | en |
| dc.relation.publisherversion | http://doi.org/10.1016/j.envexpbot.2013.10.020 | |
| dc.rights | © 2013 The Authors. Open access under CC BY-NC-ND license. | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | en |
| dc.rights.accessRights | Acceso abierto / Sarbide irekia | es |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ | |
| dc.subject | Elevated [CO₂] | en |
| dc.subject | Nodule | en |
| dc.subject | Pea | en |
| dc.subject | Photoassimilates | en |
| dc.subject | Starch | en |
| dc.subject | Sucrose | en |
| dc.title | Unravelling the mechanisms that improve photosynthetic performance of N₂-fixing pea plants exposed to elevated [CO₂] | en |
| dc.type | info:eu-repo/semantics/article | en |
| dc.type | Artículo / Artikulua | es |
| dc.type.version | info:eu-repo/semantics/publishedVersion | en |
| dc.type.version | Versión publicada / Argitaratu den bertsioa | es |
| dspace.entity.type | Publication | |
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