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The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces

Drought stress reduces annual global wheat yields by 20%. Silicon (Si) fertilisation has been proposed to improve plant drought stress tolerance. However, it is currently unknown if and how Si affects different wheat landraces, especially with respect to their innate Si accumulation properties. In t...

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Autores principales: Thorne, Sarah J., Hartley, Susan E., Maathuis, Frans J. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8074377/
https://www.ncbi.nlm.nih.gov/pubmed/33924159
http://dx.doi.org/10.3390/plants10040814
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author Thorne, Sarah J.
Hartley, Susan E.
Maathuis, Frans J. M.
author_facet Thorne, Sarah J.
Hartley, Susan E.
Maathuis, Frans J. M.
author_sort Thorne, Sarah J.
collection PubMed
description Drought stress reduces annual global wheat yields by 20%. Silicon (Si) fertilisation has been proposed to improve plant drought stress tolerance. However, it is currently unknown if and how Si affects different wheat landraces, especially with respect to their innate Si accumulation properties. In this study, significant and consistent differences in Si accumulation between landraces were identified, allowing for the classification of high Si accumulators and low Si accumulators. Landraces from the two accumulation groups were then used to investigate the effect of Si during osmotic and drought stress. Si was found to improve growth marginally in high Si accumulators during osmotic stress. However, no significant effect of Si on growth during drought stress was found. It was further found that osmotic stress decreased Si accumulation for all landraces whereas drought increased it. Overall, these results suggest that the beneficial effect of Si commonly reported in similar studies is not universal and that the application of Si fertiliser as a solution to agricultural drought stress requires detailed understanding of genotype-specific responses to Si.
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spelling pubmed-80743772021-04-27 The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces Thorne, Sarah J. Hartley, Susan E. Maathuis, Frans J. M. Plants (Basel) Article Drought stress reduces annual global wheat yields by 20%. Silicon (Si) fertilisation has been proposed to improve plant drought stress tolerance. However, it is currently unknown if and how Si affects different wheat landraces, especially with respect to their innate Si accumulation properties. In this study, significant and consistent differences in Si accumulation between landraces were identified, allowing for the classification of high Si accumulators and low Si accumulators. Landraces from the two accumulation groups were then used to investigate the effect of Si during osmotic and drought stress. Si was found to improve growth marginally in high Si accumulators during osmotic stress. However, no significant effect of Si on growth during drought stress was found. It was further found that osmotic stress decreased Si accumulation for all landraces whereas drought increased it. Overall, these results suggest that the beneficial effect of Si commonly reported in similar studies is not universal and that the application of Si fertiliser as a solution to agricultural drought stress requires detailed understanding of genotype-specific responses to Si. MDPI 2021-04-20 /pmc/articles/PMC8074377/ /pubmed/33924159 http://dx.doi.org/10.3390/plants10040814 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Thorne, Sarah J.
Hartley, Susan E.
Maathuis, Frans J. M.
The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title_full The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title_fullStr The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title_full_unstemmed The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title_short The Effect of Silicon on Osmotic and Drought Stress Tolerance in Wheat Landraces
title_sort effect of silicon on osmotic and drought stress tolerance in wheat landraces
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8074377/
https://www.ncbi.nlm.nih.gov/pubmed/33924159
http://dx.doi.org/10.3390/plants10040814
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