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

Wheat plants (Triticum durum Desf., cv. Regallo) were grown in the field to study the effects of contrasting [CO2] 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...

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Autores: Aranjuelo Michelena, Iker, Cabrera i Bosquet, Llorenç, Morcuende, Rosa, Pérez, Pilar, Avice, Jean-Christophe, Nogués Mestres, Salvador, Araus Ortega, José Luis, Martínez Carrasco, Rafael
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2011
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/47207
Acceso en línea:https://hdl.handle.net/2445/47207
Access Level:acceso abierto
Palabra clave:Blat
Diòxid de carboni
Respiració de les plantes
Wheat
Carbon dioxide
Plant respiration
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spelling Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?Aranjuelo Michelena, IkerCabrera i Bosquet, LlorençMorcuende, RosaPérez, PilarAvice, Jean-ChristopheNogués Mestres, SalvadorAraus Ortega, José LuisMartínez Carrasco, RafaelBlatDiòxid de carboniRespiració de les plantesWheatCarbon dioxidePlant respirationWheat plants (Triticum durum Desf., cv. Regallo) were grown in the field to study the effects of contrasting [CO2] 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 CO2. The ambient 13C/12C isotopic composition (δ13C) of air CO2 was changed from-10.2 in ambient [CO2] to-23.6 under elevated [CO2] between the 7th and the 14th days after anthesis in order to study C assimilation and partitioning between leaves and ears. Elevated [CO2] 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 [CO2] negatively affected Rubisco and Rubisco activase protein content and induced photosynthetic down-regulation. CO2 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 δ13C of ear total organic matter and respired CO2, soluble sugar δ13C revealed that a small amount of labelled C reached the ear. The 12CO2 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.Oxford University Press2013201320112013info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion47 p.application/pdfhttps://hdl.handle.net/2445/47207Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: http://dx.doi.org/10.1093/jxb/err095Journal of Experimental Botany, 2011, vol. 62, num. 11, p. 3957-3969http://dx.doi.org/10.1093/jxb/err095(c) Aranjuelo Michelena, Iker et al., 2011info:eu-repo/semantics/openAccessoai:recercat.cat:2445/472072026-05-29T05:05:01Z
dc.title.none.fl_str_mv Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
title Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
spellingShingle Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
Aranjuelo Michelena, Iker
Blat
Diòxid de carboni
Respiració de les plantes
Wheat
Carbon dioxide
Plant respiration
title_short Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_full Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_fullStr Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_full_unstemmed Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
title_sort Does ear C sink strength contributes to the overcoming of photosynthetic acclimation of wheat plants exposed to elevated CO2?
dc.creator.none.fl_str_mv Aranjuelo Michelena, Iker
Cabrera i Bosquet, Llorenç
Morcuende, Rosa
Pérez, Pilar
Avice, Jean-Christophe
Nogués Mestres, Salvador
Araus Ortega, José Luis
Martínez Carrasco, Rafael
author Aranjuelo Michelena, Iker
author_facet Aranjuelo Michelena, Iker
Cabrera i Bosquet, Llorenç
Morcuende, Rosa
Pérez, Pilar
Avice, Jean-Christophe
Nogués Mestres, Salvador
Araus Ortega, José Luis
Martínez Carrasco, Rafael
author_role author
author2 Cabrera i Bosquet, Llorenç
Morcuende, Rosa
Pérez, Pilar
Avice, Jean-Christophe
Nogués Mestres, Salvador
Araus Ortega, José Luis
Martínez Carrasco, Rafael
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Blat
Diòxid de carboni
Respiració de les plantes
Wheat
Carbon dioxide
Plant respiration
topic Blat
Diòxid de carboni
Respiració de les plantes
Wheat
Carbon dioxide
Plant respiration
description Wheat plants (Triticum durum Desf., cv. Regallo) were grown in the field to study the effects of contrasting [CO2] 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 CO2. The ambient 13C/12C isotopic composition (δ13C) of air CO2 was changed from-10.2 in ambient [CO2] to-23.6 under elevated [CO2] between the 7th and the 14th days after anthesis in order to study C assimilation and partitioning between leaves and ears. Elevated [CO2] 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 [CO2] negatively affected Rubisco and Rubisco activase protein content and induced photosynthetic down-regulation. CO2 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 δ13C of ear total organic matter and respired CO2, soluble sugar δ13C revealed that a small amount of labelled C reached the ear. The 12CO2 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.
publishDate 2011
dc.date.none.fl_str_mv 2011
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/47207
url https://hdl.handle.net/2445/47207
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: http://dx.doi.org/10.1093/jxb/err095
Journal of Experimental Botany, 2011, vol. 62, num. 11, p. 3957-3969
http://dx.doi.org/10.1093/jxb/err095
dc.rights.none.fl_str_mv (c) Aranjuelo Michelena, Iker et al., 2011
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Aranjuelo Michelena, Iker et al., 2011
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 47 p.
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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