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The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations
The aim of this study was to evaluate the tolerance of lichens (Evernia prunastri) and mosses (Brachythecium sp.) to short-term (1 h), acute (1 ppm) O(3) fumigation under different hydration states (dry, <10% water content, metabolism almost inactive; wet, >200% water content, metabolism fully...
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/PMC7284327/ https://www.ncbi.nlm.nih.gov/pubmed/32349300 http://dx.doi.org/10.3390/biology9050090 |
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author | Vannini, Andrea Canali, Giulia Pica, Mario Nali, Cristina Loppi, Stefano |
author_facet | Vannini, Andrea Canali, Giulia Pica, Mario Nali, Cristina Loppi, Stefano |
author_sort | Vannini, Andrea |
collection | PubMed |
description | The aim of this study was to evaluate the tolerance of lichens (Evernia prunastri) and mosses (Brachythecium sp.) to short-term (1 h), acute (1 ppm) O(3) fumigation under different hydration states (dry, <10% water content, metabolism almost inactive; wet, >200% water content, metabolism fully active). We hypothesized that stronger damage would occur following exposure under wet conditions. In addition, we checked for the effect of recovery (1 week) after the exposure. Ozone fumigation negatively affected the content of chlorophyll only in wet samples, but in the moss, such a difference was no longer evident after one week of recovery. Photosynthetic efficiency was always impaired by O(3) exposure, irrespective of the dry or wet state, and also after one week of recovery, but the effect was much stronger in wet samples. The antioxidant power was increased in wet moss and in dry lichen, while a decrease was found for wet lichens after 1 week. Our results confirm that the tolerance to O(3) of lichens and mosses may be determined by their low water content, which is the case during the peaks of O(3) occurring during the Mediterranean summer. The role of antioxidant power as a mechanism of resistance to high O(3) concentrations needs to be further investigated. |
format | Online Article Text |
id | pubmed-7284327 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72843272020-08-13 The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations Vannini, Andrea Canali, Giulia Pica, Mario Nali, Cristina Loppi, Stefano Biology (Basel) Article The aim of this study was to evaluate the tolerance of lichens (Evernia prunastri) and mosses (Brachythecium sp.) to short-term (1 h), acute (1 ppm) O(3) fumigation under different hydration states (dry, <10% water content, metabolism almost inactive; wet, >200% water content, metabolism fully active). We hypothesized that stronger damage would occur following exposure under wet conditions. In addition, we checked for the effect of recovery (1 week) after the exposure. Ozone fumigation negatively affected the content of chlorophyll only in wet samples, but in the moss, such a difference was no longer evident after one week of recovery. Photosynthetic efficiency was always impaired by O(3) exposure, irrespective of the dry or wet state, and also after one week of recovery, but the effect was much stronger in wet samples. The antioxidant power was increased in wet moss and in dry lichen, while a decrease was found for wet lichens after 1 week. Our results confirm that the tolerance to O(3) of lichens and mosses may be determined by their low water content, which is the case during the peaks of O(3) occurring during the Mediterranean summer. The role of antioxidant power as a mechanism of resistance to high O(3) concentrations needs to be further investigated. MDPI 2020-04-27 /pmc/articles/PMC7284327/ /pubmed/32349300 http://dx.doi.org/10.3390/biology9050090 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 Vannini, Andrea Canali, Giulia Pica, Mario Nali, Cristina Loppi, Stefano The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title | The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title_full | The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title_fullStr | The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title_full_unstemmed | The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title_short | The Water Content Drives the Susceptibility of the Lichen Evernia prunastri and the Moss Brachythecium sp. to High Ozone Concentrations |
title_sort | water content drives the susceptibility of the lichen evernia prunastri and the moss brachythecium sp. to high ozone concentrations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7284327/ https://www.ncbi.nlm.nih.gov/pubmed/32349300 http://dx.doi.org/10.3390/biology9050090 |
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