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Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress

The depletion of the stratospheric ozone layer due to natural and/or anthropogenic causes decreases the amount of UV-B radiation filtered, and consequently increases the risk of potential damage to organisms. In the Mediterranean region, high UV-B indices are frequent. Even for species typical of th...

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Autores principales: Piccini, Chiara, Cantini, Claudio, Cai, Giampiero, Pinto, Diana C. G. A., Silva, Artur M. S., Romi, Marco, Dias, Maria Celeste
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912780/
https://www.ncbi.nlm.nih.gov/pubmed/35270150
http://dx.doi.org/10.3390/plants11050680
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author Piccini, Chiara
Cantini, Claudio
Cai, Giampiero
Pinto, Diana C. G. A.
Silva, Artur M. S.
Romi, Marco
Dias, Maria Celeste
author_facet Piccini, Chiara
Cantini, Claudio
Cai, Giampiero
Pinto, Diana C. G. A.
Silva, Artur M. S.
Romi, Marco
Dias, Maria Celeste
author_sort Piccini, Chiara
collection PubMed
description The depletion of the stratospheric ozone layer due to natural and/or anthropogenic causes decreases the amount of UV-B radiation filtered, and consequently increases the risk of potential damage to organisms. In the Mediterranean region, high UV-B indices are frequent. Even for species typical of this region, such as the olive tree, the progressive increase in UV-B radiation represents a threat. This work aimed to understand how high UV-B radiation modulates the phenolic and lipophilic profile of olive varieties, and identify metabolites that enhance olive stress tolerance. Two Italian olive varieties were subjected to chronic UV-B stress, and leaves were analyzed by gas and liquid chromatography. The results indicated that the most representative phenolic and lipophilic compounds of Giarraffa and Olivastra Seggianese were readjusted in response to UV-B stress. The Giarraffa variety seemed better suited to prolonged UV-B stress, possibly due to the higher availability of flavonoids that could help control oxidative damage, and the accumulation of hydroxycinnamic acid derivatives that could provide strong UV-B shield protection. In addition, this variety contained higher levels of fatty acids (e.g., palmitic, α-linolenic, and stearic acids), which can help to maintain membrane integrity and accumulate more sorbitol (which may serve as an osmoprotectant or act a free-radical scavenger), terpenes, and long-chain alkanes, providing higher protection against UV-B stress.
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spelling pubmed-89127802022-03-11 Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress Piccini, Chiara Cantini, Claudio Cai, Giampiero Pinto, Diana C. G. A. Silva, Artur M. S. Romi, Marco Dias, Maria Celeste Plants (Basel) Article The depletion of the stratospheric ozone layer due to natural and/or anthropogenic causes decreases the amount of UV-B radiation filtered, and consequently increases the risk of potential damage to organisms. In the Mediterranean region, high UV-B indices are frequent. Even for species typical of this region, such as the olive tree, the progressive increase in UV-B radiation represents a threat. This work aimed to understand how high UV-B radiation modulates the phenolic and lipophilic profile of olive varieties, and identify metabolites that enhance olive stress tolerance. Two Italian olive varieties were subjected to chronic UV-B stress, and leaves were analyzed by gas and liquid chromatography. The results indicated that the most representative phenolic and lipophilic compounds of Giarraffa and Olivastra Seggianese were readjusted in response to UV-B stress. The Giarraffa variety seemed better suited to prolonged UV-B stress, possibly due to the higher availability of flavonoids that could help control oxidative damage, and the accumulation of hydroxycinnamic acid derivatives that could provide strong UV-B shield protection. In addition, this variety contained higher levels of fatty acids (e.g., palmitic, α-linolenic, and stearic acids), which can help to maintain membrane integrity and accumulate more sorbitol (which may serve as an osmoprotectant or act a free-radical scavenger), terpenes, and long-chain alkanes, providing higher protection against UV-B stress. MDPI 2022-03-02 /pmc/articles/PMC8912780/ /pubmed/35270150 http://dx.doi.org/10.3390/plants11050680 Text en © 2022 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
Piccini, Chiara
Cantini, Claudio
Cai, Giampiero
Pinto, Diana C. G. A.
Silva, Artur M. S.
Romi, Marco
Dias, Maria Celeste
Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title_full Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title_fullStr Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title_full_unstemmed Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title_short Chemical Profiling of Two Italian Olea europaea (L.) Varieties Subjected to UV-B Stress
title_sort chemical profiling of two italian olea europaea (l.) varieties subjected to uv-b stress
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8912780/
https://www.ncbi.nlm.nih.gov/pubmed/35270150
http://dx.doi.org/10.3390/plants11050680
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