Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?

13 p., 3 tables, 6 figures and bibliography

Bibliographic Details
Authors: Aranjuelo, Iker, Cabrera-Bosquet, Llorenç, Morcuende, Rosa, Avice, Jean Christophe, Nogués, Salvador, Araus, José Luis, Martínez-Carrasco, Rafael, Pérez Pérez, Pilar
Format: article
Publication Date:2011
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/49163
Online Access:http://hdl.handle.net/10261/49163
Access Level:Open access
Keyword:C management
Elevated CO2
Photosynthetic acclimation
Proteomic characterization
Rubisco
Stable isotopes
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repository_id_str
spelling Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?Aranjuelo, IkerCabrera-Bosquet, LlorençMorcuende, RosaAvice, Jean ChristopheNogués, SalvadorAraus, José LuisMartínez-Carrasco, RafaelPérez Pérez, PilarC managementElevated CO2Photosynthetic acclimationProteomic characterizationRubiscoStable isotopes13 p., 3 tables, 6 figures and bibliographyWheat plants (Triticum durum Desf., cv. Regallo) were grown in the field to study the effects of contrasting [CO 2] conditions (700 versus 370 μmol mol -1) on growth, photosynthetic performance, and C management during the post-anthesis period. The aim was to test whether a restricted capacity of sink organs to utilize photosynthates drives a loss of photosynthetic capacity in elevated CO 2. The ambient 13C/ 12C isotopic composition (δ 13C) of air CO 2 was changed from-10.2‰ in ambient [CO 2] to-23.6‰ under elevated [CO 2] between the 7th and the 14th days after anthesis in order to study C assimilation and partitioning between leaves and ears. Elevated [CO 2] had no significant effect on biomass production and grain filling, and caused an accumulation of C compounds in leaves. This was accompanied by up-regulation of phosphoglycerate mutase and ATP synthase protein content, together with down-regulation of adenosine diphosphate glucose pyrophosphatase protein. Growth in elevated [CO 2] negatively affected Rubisco and Rubisco activase protein content and induced photosynthetic down-regulation. CO 2 enrichment caused a specific decrease in Rubisco content, together with decreases in the amino acid and total N content of leaves. The C labelling revealed that in flag leaves, part of the C fixed during grain filling was stored as starch and structural C compounds whereas the rest of the labelled C (mainly in the form of soluble sugars) was completely respired 48 h after the end of labelling. Although labelled C was not detected in the δ 13C of ear total organic matter and respired CO 2, soluble sugar δ 13C revealed that a small amount of labelled C reached the ear. The 12CO 2 labelling suggests that during the beginning of post-anthesis the ear did not contribute towards overcoming flag leaf carbohydrate accumulation, and this had a consequent effect on protein expression and photosynthetic acclimation.This work has been funded by the Spanish National Research and Development Programme–European Regional Development Fund ERDF (Projects AGL2009-13539-C02-01, AGL2006- 13541-C02–02, and CGL2009-13079-C02-02).Peer reviewedOxford University Press201220122011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/49163reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1093/jxb/err095info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/491632026-05-22T06:33:51Z
dc.title.none.fl_str_mv Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
title Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
spellingShingle Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
Aranjuelo, Iker
C management
Elevated CO2
Photosynthetic acclimation
Proteomic characterization
Rubisco
Stable isotopes
title_short Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_full Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_fullStr Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_full_unstemmed Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_sort Does ear C sink strength contribute to overcoming photosynthetic acclimation of wheat plants exposed to elevated CO2?
dc.creator.none.fl_str_mv Aranjuelo, Iker
Cabrera-Bosquet, Llorenç
Morcuende, Rosa
Avice, Jean Christophe
Nogués, Salvador
Araus, José Luis
Martínez-Carrasco, Rafael
Pérez Pérez, Pilar
author Aranjuelo, Iker
author_facet Aranjuelo, Iker
Cabrera-Bosquet, Llorenç
Morcuende, Rosa
Avice, Jean Christophe
Nogués, Salvador
Araus, José Luis
Martínez-Carrasco, Rafael
Pérez Pérez, Pilar
author_role author
author2 Cabrera-Bosquet, Llorenç
Morcuende, Rosa
Avice, Jean Christophe
Nogués, Salvador
Araus, José Luis
Martínez-Carrasco, Rafael
Pérez Pérez, Pilar
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv C management
Elevated CO2
Photosynthetic acclimation
Proteomic characterization
Rubisco
Stable isotopes
topic C management
Elevated CO2
Photosynthetic acclimation
Proteomic characterization
Rubisco
Stable isotopes
description 13 p., 3 tables, 6 figures and bibliography
publishDate 2011
dc.date.none.fl_str_mv 2011
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/49163
url http://hdl.handle.net/10261/49163
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1093/jxb/err095
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422933996208128
score 15,811543

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