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Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance

Although the relevance of spike bracts in stress acclimation and contribution to wheat yield was recently revealed, the metabolome of this organ and its response to water stress is still unknown. The metabolite profiles of flag leaves, glumes and lemmas were characterized under contrasting field wat...

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Autores principales: Vergara-Diaz, Omar, Vatter, Thomas, Vicente, Rubén, Obata, Toshihiro, Nieto-Taladriz, Maria Teresa, Aparicio, Nieves, Carlisle Kefauver, Shawn, Fernie, Alisdair, Araus, José Luis
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7226616/
https://www.ncbi.nlm.nih.gov/pubmed/32326207
http://dx.doi.org/10.3390/cells9041025
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author Vergara-Diaz, Omar
Vatter, Thomas
Vicente, Rubén
Obata, Toshihiro
Nieto-Taladriz, Maria Teresa
Aparicio, Nieves
Carlisle Kefauver, Shawn
Fernie, Alisdair
Araus, José Luis
author_facet Vergara-Diaz, Omar
Vatter, Thomas
Vicente, Rubén
Obata, Toshihiro
Nieto-Taladriz, Maria Teresa
Aparicio, Nieves
Carlisle Kefauver, Shawn
Fernie, Alisdair
Araus, José Luis
author_sort Vergara-Diaz, Omar
collection PubMed
description Although the relevance of spike bracts in stress acclimation and contribution to wheat yield was recently revealed, the metabolome of this organ and its response to water stress is still unknown. The metabolite profiles of flag leaves, glumes and lemmas were characterized under contrasting field water regimes in five durum wheat cultivars. Water conditions during growth were characterized through spectral vegetation indices, canopy temperature and isotope composition. Spike bracts exhibited better coordination of carbon and nitrogen metabolisms than the flag leaves in terms of photorespiration, nitrogen assimilation and respiration paths. This coordination facilitated an accumulation of organic and amino acids in spike bracts, especially under water stress. The metabolomic response to water stress also involved an accumulation of antioxidant and drought tolerance related sugars, particularly in the spikes. Furthermore, certain cell wall, respiratory and protective metabolites were associated with genotypic outperformance and yield stability. In addition, grain yield was strongly predicted by leaf and spike bracts metabolomes independently. This study supports the role of the spike as a key organ during wheat grain filling, particularly under stress conditions and provides relevant information to explore new ways to improve wheat productivity including potential biomarkers for yield prediction.
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spelling pubmed-72266162020-05-18 Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance Vergara-Diaz, Omar Vatter, Thomas Vicente, Rubén Obata, Toshihiro Nieto-Taladriz, Maria Teresa Aparicio, Nieves Carlisle Kefauver, Shawn Fernie, Alisdair Araus, José Luis Cells Article Although the relevance of spike bracts in stress acclimation and contribution to wheat yield was recently revealed, the metabolome of this organ and its response to water stress is still unknown. The metabolite profiles of flag leaves, glumes and lemmas were characterized under contrasting field water regimes in five durum wheat cultivars. Water conditions during growth were characterized through spectral vegetation indices, canopy temperature and isotope composition. Spike bracts exhibited better coordination of carbon and nitrogen metabolisms than the flag leaves in terms of photorespiration, nitrogen assimilation and respiration paths. This coordination facilitated an accumulation of organic and amino acids in spike bracts, especially under water stress. The metabolomic response to water stress also involved an accumulation of antioxidant and drought tolerance related sugars, particularly in the spikes. Furthermore, certain cell wall, respiratory and protective metabolites were associated with genotypic outperformance and yield stability. In addition, grain yield was strongly predicted by leaf and spike bracts metabolomes independently. This study supports the role of the spike as a key organ during wheat grain filling, particularly under stress conditions and provides relevant information to explore new ways to improve wheat productivity including potential biomarkers for yield prediction. MDPI 2020-04-21 /pmc/articles/PMC7226616/ /pubmed/32326207 http://dx.doi.org/10.3390/cells9041025 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Vergara-Diaz, Omar
Vatter, Thomas
Vicente, Rubén
Obata, Toshihiro
Nieto-Taladriz, Maria Teresa
Aparicio, Nieves
Carlisle Kefauver, Shawn
Fernie, Alisdair
Araus, José Luis
Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title_full Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title_fullStr Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title_full_unstemmed Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title_short Metabolome Profiling Supports the Key Role of the Spike in Wheat Yield Performance
title_sort metabolome profiling supports the key role of the spike in wheat yield performance
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7226616/
https://www.ncbi.nlm.nih.gov/pubmed/32326207
http://dx.doi.org/10.3390/cells9041025
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