Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence

Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence

47 páginas, 3 tablas, 7 figuras, 1 tabla suplementaria, 5 figuras suplementarias. -- - The definitive versión is available at https://doi.org/10.1016/j.envexpbot.2018.06.004

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Main Authors: Vicente Pérez, Rubén, Vergara-Díaz, Omar, Medina, Susan, Chairi, Fadia, Kefauver, Shawn C., Bort, Jordi, Serret, María Dolores, Aparicio, Nieves, Araus, José Luis
Other Authors: Ministerio de Economía y Competitividad (España)
Format: artículo biblioteca
Language:English
Published: Elsevier 2018
Subjects:Durum wheat, Ear, Flag leaf, Gene expression, Vegetation index, Water stress,
Online Access:http://hdl.handle.net/10261/377502
https://api.elsevier.com/content/abstract/scopus_id/85048842693
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spelling dig-irnasa-es-10261-3775022025-01-22T16:37:10Z Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence Vicente Pérez, Rubén Vergara-Díaz, Omar Medina, Susan Chairi, Fadia Kefauver, Shawn C. Bort, Jordi Serret, María Dolores Aparicio, Nieves Araus, José Luis Ministerio de Economía y Competitividad (España) Universidad de Barcelona Vicente Pérez, Rubén [0000-0001-5469-2645] Durum wheat Ear Flag leaf Gene expression Vegetation index Water stress 47 páginas, 3 tablas, 7 figuras, 1 tabla suplementaria, 5 figuras suplementarias. -- - The definitive versión is available at https://doi.org/10.1016/j.envexpbot.2018.06.004 Drought is the main abiotic stress threatening wheat production in the Mediterranean region. While the negative effect of drought on the photosynthetic carbon and nitrogen metabolism of the flag leaf has been widely studied, little is known about its effect on other photosynthetic organs such as the ear. Our study compared the responses to water stress of organ temperature, spectral vegetation indices, nitrogen content, carbon isotope composition (δ13C) and expression of key genes for primary metabolism and drought-stress response in the flag leaf and the ear. Measurements were performed at heading and early grain filling in field-grown durum wheat under irrigated and rainfed conditions. Multivariate analysis of physiological traits and gene expression indicated that ears had a similar behaviour regardless of the water regime, while water stress led to significant negative effects on flag leaves. This better performance of ears under water stress compared to leaves was due to good nitrogen and water status and higher expression of key genes for primary metabolism and drought-stress responses, which also indicate a pattern of delayed senescence in ears. Upregulation of genes involved in respiration, CO2 refixation and nitrogen assimilation in ears may also suggest the relevance of these processes in ear metabolism under water stress. This study highlights the importance of including ear traits when unravelling the mechanisms that facilitate adaption of wheat to future environmental scenarios. This work was supported by the Spanish National Programme for Research Aimed at the Challenges of Society, from the Ministry of Economy and Competitiveness (MEC) [grant number AGL2016-76527-R]. S. Medina, O. Vergara-Díaz and F. Chairi are recipients of the PhD fellowships “Presidente de la República PRONABEC-III” from the Peruvian Government, “Ajuts de Personal Investigador Predoctoral en Formació” (APIF) sponsored by the University of Barcelona, and FPI funded by the MEC [BES-2014-067671], respectively. S.C. Kefauver is a recipient of a Juan de la Cierva Research grant from the MEC [IJCI-2014-20595]. Peer reviewed 2025-01-22T16:37:10Z 2025-01-22T16:37:10Z 2018 artículo Postprint Environmental and Experimental Botany 153: 271-285 (2018) 0098-8472 http://hdl.handle.net/10261/377502 10.1016/j.envexpbot.2018.06.004 1873-7307 2-s2.0-85048842693 https://api.elsevier.com/content/abstract/scopus_id/85048842693 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI//AGL2016-76527-R/ES/FENOTIPEADO EN TRIGO DURO: BASES FISIOLOGICAS, CRITERIOS DE SELECCION Y PLATAFORMAS DE EVALUACION/ Environmental and Experimental Botany https://doi.org/10.1016/j.envexpbot.2018.06.004 No open Elsevier
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 Durum wheat
Ear
Flag leaf
Gene expression
Vegetation index
Water stress
Durum wheat
Ear
Flag leaf
Gene expression
Vegetation index
Water stress
spellingShingle Durum wheat
Ear
Flag leaf
Gene expression
Vegetation index
Water stress
Durum wheat
Ear
Flag leaf
Gene expression
Vegetation index
Water stress
Vicente Pérez, Rubén
Vergara-Díaz, Omar
Medina, Susan
Chairi, Fadia
Kefauver, Shawn C.
Bort, Jordi
Serret, María Dolores
Aparicio, Nieves
Araus, José Luis
Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
description 47 páginas, 3 tablas, 7 figuras, 1 tabla suplementaria, 5 figuras suplementarias. -- - The definitive versión is available at https://doi.org/10.1016/j.envexpbot.2018.06.004
author2 Ministerio de Economía y Competitividad (España)
author_facet Ministerio de Economía y Competitividad (España)
Vicente Pérez, Rubén
Vergara-Díaz, Omar
Medina, Susan
Chairi, Fadia
Kefauver, Shawn C.
Bort, Jordi
Serret, María Dolores
Aparicio, Nieves
Araus, José Luis
format artículo
topic_facet Durum wheat
Ear
Flag leaf
Gene expression
Vegetation index
Water stress
author Vicente Pérez, Rubén
Vergara-Díaz, Omar
Medina, Susan
Chairi, Fadia
Kefauver, Shawn C.
Bort, Jordi
Serret, María Dolores
Aparicio, Nieves
Araus, José Luis
author_sort Vicente Pérez, Rubén
title Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
title_short Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
title_full Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
title_fullStr Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
title_full_unstemmed Durum wheat ears perform better than the flag leaves under water stress: Gene expression and physiological evidence
title_sort durum wheat ears perform better than the flag leaves under water stress: gene expression and physiological evidence
publisher Elsevier
publishDate 2018
url http://hdl.handle.net/10261/377502
https://api.elsevier.com/content/abstract/scopus_id/85048842693
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