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Mechanisms of Plant Antioxidants Action

The plant kingdom is a rich source of health-promoting compounds and has always played a fundamental role in the isolation, identification, and modification of compounds able to perform several properties on live organisms. Among them, the so-called “antioxidants” have a major potentiality to increa...

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Autor principal: Barreca, Davide
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7823753/
https://www.ncbi.nlm.nih.gov/pubmed/33375600
http://dx.doi.org/10.3390/plants10010035
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author Barreca, Davide
author_facet Barreca, Davide
author_sort Barreca, Davide
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description The plant kingdom is a rich source of health-promoting compounds and has always played a fundamental role in the isolation, identification, and modification of compounds able to perform several properties on live organisms. Among them, the so-called “antioxidants” have a major potentiality to increase human wellness. Antioxidants are important components in the signaling and defense mechanisms in some plants, where they are precursors of compounds of greater complexity, the modulator of plant growth, and the defensive system against pathogenic organisms and predators. The extraordinary variety of chemical structure and substitution present in the different plant antioxidants make them an inestimable source of interesting compounds, with the ability to counter reactive oxygen/nitrogen species (ROS/RNS) and to stimulate the activation of signal cascade inside the cells. The mechanisms by which antioxidants detoxify these dangerous compounds are complex and involve either direct or indirect interaction with radicals. Antioxidants inhibit or quench free radical reactions mainly based on their reducing capacity or hydrogen atom-donating capacity, their solubility, and chelating properties. Moreover, their ability to modulate key metabolic enzymes and activate/block gene transcription also has remarkable importance.
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spelling pubmed-78237532021-01-24 Mechanisms of Plant Antioxidants Action Barreca, Davide Plants (Basel) Editorial The plant kingdom is a rich source of health-promoting compounds and has always played a fundamental role in the isolation, identification, and modification of compounds able to perform several properties on live organisms. Among them, the so-called “antioxidants” have a major potentiality to increase human wellness. Antioxidants are important components in the signaling and defense mechanisms in some plants, where they are precursors of compounds of greater complexity, the modulator of plant growth, and the defensive system against pathogenic organisms and predators. The extraordinary variety of chemical structure and substitution present in the different plant antioxidants make them an inestimable source of interesting compounds, with the ability to counter reactive oxygen/nitrogen species (ROS/RNS) and to stimulate the activation of signal cascade inside the cells. The mechanisms by which antioxidants detoxify these dangerous compounds are complex and involve either direct or indirect interaction with radicals. Antioxidants inhibit or quench free radical reactions mainly based on their reducing capacity or hydrogen atom-donating capacity, their solubility, and chelating properties. Moreover, their ability to modulate key metabolic enzymes and activate/block gene transcription also has remarkable importance. MDPI 2020-12-25 /pmc/articles/PMC7823753/ /pubmed/33375600 http://dx.doi.org/10.3390/plants10010035 Text en © 2020 by the author. 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 Editorial
Barreca, Davide
Mechanisms of Plant Antioxidants Action
title Mechanisms of Plant Antioxidants Action
title_full Mechanisms of Plant Antioxidants Action
title_fullStr Mechanisms of Plant Antioxidants Action
title_full_unstemmed Mechanisms of Plant Antioxidants Action
title_short Mechanisms of Plant Antioxidants Action
title_sort mechanisms of plant antioxidants action
topic Editorial
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7823753/
https://www.ncbi.nlm.nih.gov/pubmed/33375600
http://dx.doi.org/10.3390/plants10010035
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