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

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

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12 páginas, 4 figuras

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Main Authors: Gámez, Angie L., Vicente, Rubén, Sanchez-Bragado, Rut, Jauregui, Iván, Morcuende, Rosa, Goicoechea, Nieves, Aranjuelo, Iker
Other Authors: Ministerio de Ciencia, Innovación y Universidades (España)
Format: artículo biblioteca
Language:English
Published: Frontiers Media 2020
Subjects:Ear physiology, Elevated CO2, Durum wheat, Photosynthesis acclimation, Gene expression,
Online Access:http://hdl.handle.net/10261/226776
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spelling dig-irnasa-es-10261-2267762021-12-27T16:23:26Z Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat Gámez, Angie L. Vicente, Rubén Sanchez-Bragado, Rut Jauregui, Iván Morcuende, Rosa Goicoechea, Nieves Aranjuelo, Iker Ministerio de Ciencia, Innovación y Universidades (España) Morcuende, Rosa [0000-0002-1662-3961] Ear physiology Elevated CO2 Durum wheat Photosynthesis acclimation Gene expression 12 páginas, 4 figuras 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 This research was supported by the Spanish Innovation and Universities Ministry (PCIN-2017-007) and the Ministry of Education and Sciences (grants PID2019-107154RB100; PID2019-110445RB-100). RV was the recipient of an FPI fellowship from the Spanish Ministry of Economy and Competitiveness (BES-2010-031029). RS-B was supported by the Juan de la Cierva program JDC-Formación (FJCI-2016-28164). Peer reviewed 2021-01-15T09:04:00Z 2021-01-15T09:04:00Z 2020 artículo http://purl.org/coar/resource_type/c_6501 Frontiers in Plant Science 11: 587958 (2020) http://hdl.handle.net/10261/226776 10.3389/fpls.2020.587958 1664-462X 33391300 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PCIN-2017-007 Publisher's version http://dx.doi.org/10.3389/fpls.2020.587958 Sí open Frontiers Media
institution IRNASA ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-irnasa-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IRNASA España
language English
topic Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
spellingShingle Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
Gámez, Angie L.
Vicente, Rubén
Sanchez-Bragado, Rut
Jauregui, Iván
Morcuende, Rosa
Goicoechea, Nieves
Aranjuelo, Iker
Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
description 12 páginas, 4 figuras
author2 Ministerio de Ciencia, Innovación y Universidades (España)
author_facet Ministerio de Ciencia, Innovación y Universidades (España)
Gámez, Angie L.
Vicente, Rubén
Sanchez-Bragado, Rut
Jauregui, Iván
Morcuende, Rosa
Goicoechea, Nieves
Aranjuelo, Iker
format artículo
topic_facet Ear physiology
Elevated CO2
Durum wheat
Photosynthesis acclimation
Gene expression
author Gámez, Angie L.
Vicente, Rubén
Sanchez-Bragado, Rut
Jauregui, Iván
Morcuende, Rosa
Goicoechea, Nieves
Aranjuelo, Iker
author_sort Gámez, Angie L.
title Differential Flag Leaf and Ear Photosynthetic Performance Under Elevated (CO2) Conditions During Grain Filling Period in Durum Wheat
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
publisher Frontiers Media
publishDate 2020
url http://hdl.handle.net/10261/226776
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