Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat

Elevated concentrations of CO2 (CO2) in plants with C3 photosynthesis metabolism, such as wheat, stimulate photosynthetic rates. However, photosynthesis tends to decrease as a function of exposure to high (CO2) due to down-regulation of the photosynthetic machinery, and this phenomenon is defined as...

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Autores: Gámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483, Vicente, R. (Rubén)|||/items/bcfd1f0d-0ae2-4ce7-a60c-63baa1ea0567, Sanchez-Bragado, R. (Rut)|||/items/466b5109-f652-4bfc-8924-6bc0f5ce2169, Jauregui, I. (Iván)|||/items/cae04d40-56e0-4d0a-b1ca-d00f0337fc55, Morcuende, R. (Rosa)|||/items/a6ae1767-35bb-44d3-ae26-3ff4ac80efe0, Goicoechea-Preboste, N. (Nieves)|||/items/15d3ee01-2310-4307-af7e-b6b0f876b646, Aranjuelo, I. (Iker)|||/items/0b4d2aa2-f67b-4c8a-aca2-0cb34b171630
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad de Navarra
Repositorio:Dadun. Depósito Académico Digital de la Universidad de Navarra
Idioma:inglés
OAI Identifier:oai:dadun.unav.edu:10171/66181
Acceso en línea:https://hdl.handle.net/10171/66181
Access Level:acceso abierto
Palabra clave:Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
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spelling Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum WheatGámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483Vicente, R. (Rubén)|||/items/bcfd1f0d-0ae2-4ce7-a60c-63baa1ea0567Sanchez-Bragado, R. (Rut)|||/items/466b5109-f652-4bfc-8924-6bc0f5ce2169Jauregui, I. (Iván)|||/items/cae04d40-56e0-4d0a-b1ca-d00f0337fc55Morcuende, R. (Rosa)|||/items/a6ae1767-35bb-44d3-ae26-3ff4ac80efe0Goicoechea-Preboste, N. (Nieves)|||/items/15d3ee01-2310-4307-af7e-b6b0f876b646Aranjuelo, I. (Iker)|||/items/0b4d2aa2-f67b-4c8a-aca2-0cb34b171630Ear physiologyElevated CO2Durum wheatPhotosynthesis acclimationGene expressionElevated concentrations of CO2 (CO2) in plants with C3 photosynthesis metabolism, such as wheat, stimulate photosynthetic rates. However, photosynthesis tends to decrease as a function of exposure to high (CO2) due to down-regulation of the photosynthetic machinery, and this phenomenon is defined as photosynthetic acclimation. Considerable efforts are currently done to determine the effect of photosynthetic tissues, such us spike, in grain filling. There is good evidence that the contribution of ears to grain filling may be important not only under good agronomic conditions but also under high (CO2). The main objective of this study was to compare photoassimilate production and energy metabolism between flag leaves and glumes as part of ears of wheat (Triticum turgidum L. subsp. durum cv. Amilcar) plants exposed to ambient [a(CO2)] and elevated [e(CO2)] (CO2) (400 and 700 µmol mol−1 , respectively). Elevated CO2 had a differential effect on the responses of flag leaves and ears. The ears showed higher gross photosynthesis and respiration rates compared to the flag leaves. The higher ear carbohydrate content and respiration rates contribute to increase the grain dry mass. Our results support the concept that acclimation of photosynthesis to e(CO2) is driven by sugar accumulation, reduction in N concentrations and repression of genes related to photosynthesis, glycolysis and the tricarboxylic acid cycle, and that these were more marked in glumes than leaves. Further, important differences are described on responsiveness of flag leaves and ears to e(CO2) on genes linked with carbon and nitrogen metabolism. These findings provide information about the impact of e(CO2) on ear development during the grain filling stage and are significant for understanding the effects of increasing (CO2) on crop yield.Dadun. Depósito Académico Digital Universidad de Navarra20232023-05-0520202020-01-0120202020-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10171/66181reponame:Dadun. Depósito Académico Digital de la Universidad de Navarrainstname:Universidad de NavarraInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:dadun.unav.edu:10171/661812026-06-21T12:47:57Z
dc.title.none.fl_str_mv Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
title Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
spellingShingle Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
Gámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483
Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
title_short Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
title_full Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
title_fullStr Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
title_full_unstemmed Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
title_sort Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
dc.creator.none.fl_str_mv Gámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483
Vicente, R. (Rubén)|||/items/bcfd1f0d-0ae2-4ce7-a60c-63baa1ea0567
Sanchez-Bragado, R. (Rut)|||/items/466b5109-f652-4bfc-8924-6bc0f5ce2169
Jauregui, I. (Iván)|||/items/cae04d40-56e0-4d0a-b1ca-d00f0337fc55
Morcuende, R. (Rosa)|||/items/a6ae1767-35bb-44d3-ae26-3ff4ac80efe0
Goicoechea-Preboste, N. (Nieves)|||/items/15d3ee01-2310-4307-af7e-b6b0f876b646
Aranjuelo, I. (Iker)|||/items/0b4d2aa2-f67b-4c8a-aca2-0cb34b171630
author Gámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483
author_facet Gámez, A.L. (Angie L.)|||/items/a2138a0a-aaac-4f0d-b463-b329f0dc4483
Vicente, R. (Rubén)|||/items/bcfd1f0d-0ae2-4ce7-a60c-63baa1ea0567
Sanchez-Bragado, R. (Rut)|||/items/466b5109-f652-4bfc-8924-6bc0f5ce2169
Jauregui, I. (Iván)|||/items/cae04d40-56e0-4d0a-b1ca-d00f0337fc55
Morcuende, R. (Rosa)|||/items/a6ae1767-35bb-44d3-ae26-3ff4ac80efe0
Goicoechea-Preboste, N. (Nieves)|||/items/15d3ee01-2310-4307-af7e-b6b0f876b646
Aranjuelo, I. (Iker)|||/items/0b4d2aa2-f67b-4c8a-aca2-0cb34b171630
author_role author
author2 Vicente, R. (Rubén)|||/items/bcfd1f0d-0ae2-4ce7-a60c-63baa1ea0567
Sanchez-Bragado, R. (Rut)|||/items/466b5109-f652-4bfc-8924-6bc0f5ce2169
Jauregui, I. (Iván)|||/items/cae04d40-56e0-4d0a-b1ca-d00f0337fc55
Morcuende, R. (Rosa)|||/items/a6ae1767-35bb-44d3-ae26-3ff4ac80efe0
Goicoechea-Preboste, N. (Nieves)|||/items/15d3ee01-2310-4307-af7e-b6b0f876b646
Aranjuelo, I. (Iker)|||/items/0b4d2aa2-f67b-4c8a-aca2-0cb34b171630
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Dadun. Depósito Académico Digital Universidad de Navarra
dc.subject.none.fl_str_mv Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
topic Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
description Elevated concentrations of CO2 (CO2) in plants with C3 photosynthesis metabolism, such as wheat, stimulate photosynthetic rates. However, photosynthesis tends to decrease as a function of exposure to high (CO2) due to down-regulation of the photosynthetic machinery, and this phenomenon is defined as photosynthetic acclimation. Considerable efforts are currently done to determine the effect of photosynthetic tissues, such us spike, in grain filling. There is good evidence that the contribution of ears to grain filling may be important not only under good agronomic conditions but also under high (CO2). The main objective of this study was to compare photoassimilate production and energy metabolism between flag leaves and glumes as part of ears of wheat (Triticum turgidum L. subsp. durum cv. Amilcar) plants exposed to ambient [a(CO2)] and elevated [e(CO2)] (CO2) (400 and 700 µmol mol−1 , respectively). Elevated CO2 had a differential effect on the responses of flag leaves and ears. The ears showed higher gross photosynthesis and respiration rates compared to the flag leaves. The higher ear carbohydrate content and respiration rates contribute to increase the grain dry mass. Our results support the concept that acclimation of photosynthesis to e(CO2) is driven by sugar accumulation, reduction in N concentrations and repression of genes related to photosynthesis, glycolysis and the tricarboxylic acid cycle, and that these were more marked in glumes than leaves. Further, important differences are described on responsiveness of flag leaves and ears to e(CO2) on genes linked with carbon and nitrogen metabolism. These findings provide information about the impact of e(CO2) on ear development during the grain filling stage and are significant for understanding the effects of increasing (CO2) on crop yield.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-01-01
2020
2020-01-01
2023
2023-05-05
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10171/66181
url https://hdl.handle.net/10171/66181
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dadun. Depósito Académico Digital de la Universidad de Navarra
instname:Universidad de Navarra
instname_str Universidad de Navarra
reponame_str Dadun. Depósito Académico Digital de la Universidad de Navarra
collection Dadun. Depósito Académico Digital de la Universidad de Navarra
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