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Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability
Water is the most widely limiting factor for plants distribution, survival and agricultural productivity, their responses to drought and recovery being critical for their success and productivity. Olea europaea L. is a well-adapted species to cyclic drought events, still at considerable expense of c...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7154903/ https://www.ncbi.nlm.nih.gov/pubmed/32182702 http://dx.doi.org/10.3390/plants9030341 |
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author | Brito, Cátia Dinis, Lia-Tânia Ferreira, Helena Moutinho-Pereira, José Correia, Carlos M. |
author_facet | Brito, Cátia Dinis, Lia-Tânia Ferreira, Helena Moutinho-Pereira, José Correia, Carlos M. |
author_sort | Brito, Cátia |
collection | PubMed |
description | Water is the most widely limiting factor for plants distribution, survival and agricultural productivity, their responses to drought and recovery being critical for their success and productivity. Olea europaea L. is a well-adapted species to cyclic drought events, still at considerable expense of carbon reserves and CO(2) supply. To study the role of abscisic acid (ABA) as a promoter of drought adaptability, young potted olive trees subjected to three drought-recovery cycles were pre-treated with ABA. The results demonstrated that ABA pre-treatment allowed the delay of the drought effects on stomatal conductance (g(s)) and net photosynthesis (A(n)), and under severe drought, permitted the reduction of the non-stomatal limitations to A(n) and the relative water content decline, the accumulation of compatible solutes and avoid the decline of photosynthetic pigments, soluble proteins and total thiols concentrations and the accumulation of ROS. Upon rewatering, ABA-sprayed plants showed an early recovery of A(n). The plant ionome was also changed by the addition of ABA, with special influence on root K, N and B concentrations. The improved physiological and biochemical functions of the ABA-treated plants attenuated the drought-induced decline in biomass accumulation and potentiated root growth and whole-plant water use efficiency after successive drought-rewatering cycles. These changes are likely to be of real adaptive significance, with important implications for olive tree growth and productivity. |
format | Online Article Text |
id | pubmed-7154903 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-71549032020-04-21 Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability Brito, Cátia Dinis, Lia-Tânia Ferreira, Helena Moutinho-Pereira, José Correia, Carlos M. Plants (Basel) Article Water is the most widely limiting factor for plants distribution, survival and agricultural productivity, their responses to drought and recovery being critical for their success and productivity. Olea europaea L. is a well-adapted species to cyclic drought events, still at considerable expense of carbon reserves and CO(2) supply. To study the role of abscisic acid (ABA) as a promoter of drought adaptability, young potted olive trees subjected to three drought-recovery cycles were pre-treated with ABA. The results demonstrated that ABA pre-treatment allowed the delay of the drought effects on stomatal conductance (g(s)) and net photosynthesis (A(n)), and under severe drought, permitted the reduction of the non-stomatal limitations to A(n) and the relative water content decline, the accumulation of compatible solutes and avoid the decline of photosynthetic pigments, soluble proteins and total thiols concentrations and the accumulation of ROS. Upon rewatering, ABA-sprayed plants showed an early recovery of A(n). The plant ionome was also changed by the addition of ABA, with special influence on root K, N and B concentrations. The improved physiological and biochemical functions of the ABA-treated plants attenuated the drought-induced decline in biomass accumulation and potentiated root growth and whole-plant water use efficiency after successive drought-rewatering cycles. These changes are likely to be of real adaptive significance, with important implications for olive tree growth and productivity. MDPI 2020-03-08 /pmc/articles/PMC7154903/ /pubmed/32182702 http://dx.doi.org/10.3390/plants9030341 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 Brito, Cátia Dinis, Lia-Tânia Ferreira, Helena Moutinho-Pereira, José Correia, Carlos M. Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title | Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title_full | Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title_fullStr | Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title_full_unstemmed | Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title_short | Foliar Pre-Treatment with Abscisic Acid Enhances Olive Tree Drought Adaptability |
title_sort | foliar pre-treatment with abscisic acid enhances olive tree drought adaptability |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7154903/ https://www.ncbi.nlm.nih.gov/pubmed/32182702 http://dx.doi.org/10.3390/plants9030341 |
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