C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2

C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2

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13 páginas, 5 figuras y 2 tablas.

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Bibliographic Details
Main Authors: Torralbo, Fernando, Vicente, Rubén, Morcuende, Rosa, González, Carmen, Aranjuelo, Iker
Other Authors: Ministerio de Economía y Competitividad (España)
Format: artículo biblioteca
Language:English
Published: Oxford University Press 2019
Subjects:Barley, Carbohydrates, Elevated CO2,, Gene expression, N assimilation, Peduncle, Photosynthetic down-regulation, Sink–source,
Online Access:http://hdl.handle.net/10261/185826
http://dx.doi.org/10.13039/501100003329
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spelling dig-irnasa-es-10261-1858262021-12-27T16:44:23Z C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2 Torralbo, Fernando Vicente, Rubén Morcuende, Rosa González, Carmen Aranjuelo, Iker Ministerio de Economía y Competitividad (España) Morcuende, Rosa [0000-0002-1662-3961] González, Carmen [0000-0003-0310-5804] Aranjuelo, Iker [0000-0002-8231-5043] Barley Carbohydrates Elevated CO2, Gene expression N assimilation Peduncle Photosynthetic down-regulation Sink–source 13 páginas, 5 figuras y 2 tablas. Balancing of leaf carbohydrates is a key process for maximising crop performance in elevated CO2 environments. With the aim of testing the role of the carbon sink–source relationship under different CO2 conditions, we performed two experiments with two barley genotypes (Harrington and RCSL-89) exposed to changing CO2. In Experiment 1, the genotypes were exposed to 400 and 700 ppm CO2. Elevated CO2 induced photosynthetic acclimation in Harrington that was linked with the depletion of Rubisco protein. In contrast, a higher peduncle carbohydrate-storage capacity in RSCL-89 was associated with a better balance of leaf carbohydrates that could help to maximize the photosynthetic capacity under elevated CO2. In Experiment 2, plants that were grown at 400 ppm or 700 ppm CO2 for 5 weeks were switched to 700 ppm or 400 ppm CO2, respectively. Raising CO2 to 700 ppm increased photosynthetic rates with a reduction in leaf carbohydrate content and an improvement in N assimilation. The increase in nitrate content was associated with up-regulation of genes of protein transcripts of photosynthesis and N assimilation that favoured plant performance under elevated CO2. Finally, decreasing the CO2 from 700 ppm to 400 ppm revealed that both stomatal closure and inhibited expression of light-harvesting proteins negatively affected photosynthetic performance and plant growth. FT held a PhD grant from the Ministry of Economy and Competitiveness of the Spanish Government. This work was funded by the Spanish Government MINECO/FEDER-UE (AGL2016-79868-R, AGL2016- 79589-R, AGL2015-64582-02-R, AGL2013-41363-R) and by the Basque Government (IT-932-16). Peer reviewed 2019-07-10T10:47:54Z 2019-07-10T10:47:54Z 2019 artículo http://purl.org/coar/resource_type/c_6501 Journal of Experimental Botany 70 (2): 599-611 (2019) 0022-0957 http://hdl.handle.net/10261/185826 10.1093/jxb/ery380 1460-2431 http://dx.doi.org/10.13039/501100003329 30476207 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-79868-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2016-79589-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2015-64582-02-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AGL2013-41363-R Publisher's version https://doi.org/10.1093/jxb/ery380 Sí open Oxford University Press
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 Barley
Carbohydrates
Elevated CO2,
Gene expression
N assimilation
Peduncle
Photosynthetic down-regulation
Sink–source
Barley
Carbohydrates
Elevated CO2,
Gene expression
N assimilation
Peduncle
Photosynthetic down-regulation
Sink–source
spellingShingle Barley
Carbohydrates
Elevated CO2,
Gene expression
N assimilation
Peduncle
Photosynthetic down-regulation
Sink–source
Barley
Carbohydrates
Elevated CO2,
Gene expression
N assimilation
Peduncle
Photosynthetic down-regulation
Sink–source
Torralbo, Fernando
Vicente, Rubén
Morcuende, Rosa
González, Carmen
Aranjuelo, Iker
C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
description 13 páginas, 5 figuras y 2 tablas.
author2 Ministerio de Economía y Competitividad (España)
author_facet Ministerio de Economía y Competitividad (España)
Torralbo, Fernando
Vicente, Rubén
Morcuende, Rosa
González, Carmen
Aranjuelo, Iker
format artículo
topic_facet Barley
Carbohydrates
Elevated CO2,
Gene expression
N assimilation
Peduncle
Photosynthetic down-regulation
Sink–source
author Torralbo, Fernando
Vicente, Rubén
Morcuende, Rosa
González, Carmen
Aranjuelo, Iker
author_sort Torralbo, Fernando
title C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
title_short C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
title_full C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
title_fullStr C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
title_full_unstemmed C and N metabolism in barley leaves and peduncles modulates responsiveness to changing CO2
title_sort c and n metabolism in barley leaves and peduncles modulates responsiveness to changing co2
publisher Oxford University Press
publishDate 2019
url http://hdl.handle.net/10261/185826
http://dx.doi.org/10.13039/501100003329
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AT morcuenderosa candnmetabolisminbarleyleavesandpedunclesmodulatesresponsivenesstochangingco2
AT gonzalezcarmen candnmetabolisminbarleyleavesandpedunclesmodulatesresponsivenesstochangingco2
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