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The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress

Climate change is increasing the frequency of high temperature shocks and water shortages, pointing to the need to develop novel tolerant varieties and to understand the mechanisms employed to withstand combined abiotic stresses. Two tomato genotypes, a heat‐tolerant Solanum lycopersicum accession (...

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Autores principales: Francesca, S., Vitale, L., Arena, C., Raimondi, G., Olivieri, F., Cirillo, V., Paradiso, A., de Pinto, M. C., Maggio, A., Barone, A., Rigano, M. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293464/
https://www.ncbi.nlm.nih.gov/pubmed/34605594
http://dx.doi.org/10.1111/plb.13339
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author Francesca, S.
Vitale, L.
Arena, C.
Raimondi, G.
Olivieri, F.
Cirillo, V.
Paradiso, A.
de Pinto, M. C.
Maggio, A.
Barone, A.
Rigano, M. M.
author_facet Francesca, S.
Vitale, L.
Arena, C.
Raimondi, G.
Olivieri, F.
Cirillo, V.
Paradiso, A.
de Pinto, M. C.
Maggio, A.
Barone, A.
Rigano, M. M.
author_sort Francesca, S.
collection PubMed
description Climate change is increasing the frequency of high temperature shocks and water shortages, pointing to the need to develop novel tolerant varieties and to understand the mechanisms employed to withstand combined abiotic stresses. Two tomato genotypes, a heat‐tolerant Solanum lycopersicum accession (LA3120) and a novel genotype (E42), previously selected as a stable yielding genotype under high temperatures, were exposed to single and combined water and heat stress. Plant functional traits, pollen viability and physiological (leaf gas exchange and chlorophyll a fluorescence emission measurements) and biochemical (antioxidant content and antioxidant enzyme activity) measurements were carried out. A Reduced Representation Sequencing approach allowed exploration of the genetic variability of both genotypes to identify candidate genes that could regulate stress responses. Both abiotic stresses had a severe impact on plant growth parameters and on the reproductive phase of development. Growth parameters and leaf gas exchange measurements revealed that the two genotypes used different physiological strategies to overcome individual and combined stresses, with E42 having a more efficient capacity to utilize the limiting water resources. Activation of antioxidant defence mechanisms seemed to be critical for both genotypes to counteract combined abiotic stresses. Candidate genes were identified that could explain the different physiological responses to stress observed in E42 compared with LA3120. Results here obtained have shown how new tomato genetic resources can be a valuable source of traits for adaptation to combined abiotic stresses and should be used in breeding programmes to improve stress tolerance in commercial varieties.
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spelling pubmed-92934642022-07-20 The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress Francesca, S. Vitale, L. Arena, C. Raimondi, G. Olivieri, F. Cirillo, V. Paradiso, A. de Pinto, M. C. Maggio, A. Barone, A. Rigano, M. M. Plant Biol (Stuttg) Research Papers Climate change is increasing the frequency of high temperature shocks and water shortages, pointing to the need to develop novel tolerant varieties and to understand the mechanisms employed to withstand combined abiotic stresses. Two tomato genotypes, a heat‐tolerant Solanum lycopersicum accession (LA3120) and a novel genotype (E42), previously selected as a stable yielding genotype under high temperatures, were exposed to single and combined water and heat stress. Plant functional traits, pollen viability and physiological (leaf gas exchange and chlorophyll a fluorescence emission measurements) and biochemical (antioxidant content and antioxidant enzyme activity) measurements were carried out. A Reduced Representation Sequencing approach allowed exploration of the genetic variability of both genotypes to identify candidate genes that could regulate stress responses. Both abiotic stresses had a severe impact on plant growth parameters and on the reproductive phase of development. Growth parameters and leaf gas exchange measurements revealed that the two genotypes used different physiological strategies to overcome individual and combined stresses, with E42 having a more efficient capacity to utilize the limiting water resources. Activation of antioxidant defence mechanisms seemed to be critical for both genotypes to counteract combined abiotic stresses. Candidate genes were identified that could explain the different physiological responses to stress observed in E42 compared with LA3120. Results here obtained have shown how new tomato genetic resources can be a valuable source of traits for adaptation to combined abiotic stresses and should be used in breeding programmes to improve stress tolerance in commercial varieties. John Wiley and Sons Inc. 2021-10-04 2022-01 /pmc/articles/PMC9293464/ /pubmed/34605594 http://dx.doi.org/10.1111/plb.13339 Text en © 2021 The Authors. Plant Biology published by John Wiley & Sons Ltd on behalf of German Society for Plant Sciences, Royal Botanical Society of the Netherlands https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Papers
Francesca, S.
Vitale, L.
Arena, C.
Raimondi, G.
Olivieri, F.
Cirillo, V.
Paradiso, A.
de Pinto, M. C.
Maggio, A.
Barone, A.
Rigano, M. M.
The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title_full The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title_fullStr The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title_full_unstemmed The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title_short The efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
title_sort efficient physiological strategy of a novel tomato genotype to adapt to chronic combined water and heat stress
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9293464/
https://www.ncbi.nlm.nih.gov/pubmed/34605594
http://dx.doi.org/10.1111/plb.13339
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