Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica
This study aimed to assess the impacts of ultraviolet-B (UV-B) radiation over a 28-day period on the levels of pigments of Umbilicaria aprina and Bryum argenteum growing in field. The depletion of stratospheric ozone is most prominent over Antarctica, which receives more UV-B radiation than most oth...
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ftpubmed:oai:pubmedcentral.nih.gov:3989906 2023-05-15T13:54:48+02:00 Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica Singh, Jaswant Singh, Rudra P. 2014 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3989906 https://doi.org/10.4103/0971-6580.128815 en eng Medknow Publications & Media Pvt Ltd http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3989906 http://dx.doi.org/10.4103/0971-6580.128815 Copyright: © Toxicology International http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY-NC-SA Original Article Text 2014 ftpubmed https://doi.org/10.4103/0971-6580.128815 2014-04-20T00:53:27Z This study aimed to assess the impacts of ultraviolet-B (UV-B) radiation over a 28-day period on the levels of pigments of Umbilicaria aprina and Bryum argenteum growing in field. The depletion of stratospheric ozone is most prominent over Antarctica, which receives more UV-B radiation than most other parts of the planet. Although UV-B radiation adversely affects all flora, Antarctic plants are better equipped to survive the damaging effects of UV-B owing to defenses provided by UV-B absorbing compounds and other screening pigments. The UV-B radiations and daily average ozone values were measured by sun photometer and the photosynthetic pigments were analyzed by the standard spectrophotometric methods of exposed and unexposed selected plants. The daily average atmospheric ozone values were recorded from 5 January to 2 February 2008. The maximum daily average for ozone (310.7 Dobson Units (DU)) was recorded on 10 January 2008. On that day, average UV-B spectral irradiances were 0.016, 0.071, and 0.186 W m-2 at wavelengths of 305, 312, and 320 nm, respectively. The minimum daily average ozone value (278.6 DU) was recorded on 31 January 2008. On that day, average UV-B spectral irradiances were 0.018, 0.085, and 0.210 W m-2 at wavelengths of 305, 312, and 320 nm, respectively. Our results concludes that following prolonged UV-B exposure, total chlorophyll levels decreased gradually in both species, whereas levels of UV-B absorbing compounds, phenolics, and carotenoids gradually increased. Text Antarc* Antarctic Antarctica East Antarctica PubMed Central (PMC) Antarctic East Antarctica Toxicology International 21 1 102 |
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English |
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Original Article |
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Original Article Singh, Jaswant Singh, Rudra P. Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
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Original Article |
description |
This study aimed to assess the impacts of ultraviolet-B (UV-B) radiation over a 28-day period on the levels of pigments of Umbilicaria aprina and Bryum argenteum growing in field. The depletion of stratospheric ozone is most prominent over Antarctica, which receives more UV-B radiation than most other parts of the planet. Although UV-B radiation adversely affects all flora, Antarctic plants are better equipped to survive the damaging effects of UV-B owing to defenses provided by UV-B absorbing compounds and other screening pigments. The UV-B radiations and daily average ozone values were measured by sun photometer and the photosynthetic pigments were analyzed by the standard spectrophotometric methods of exposed and unexposed selected plants. The daily average atmospheric ozone values were recorded from 5 January to 2 February 2008. The maximum daily average for ozone (310.7 Dobson Units (DU)) was recorded on 10 January 2008. On that day, average UV-B spectral irradiances were 0.016, 0.071, and 0.186 W m-2 at wavelengths of 305, 312, and 320 nm, respectively. The minimum daily average ozone value (278.6 DU) was recorded on 31 January 2008. On that day, average UV-B spectral irradiances were 0.018, 0.085, and 0.210 W m-2 at wavelengths of 305, 312, and 320 nm, respectively. Our results concludes that following prolonged UV-B exposure, total chlorophyll levels decreased gradually in both species, whereas levels of UV-B absorbing compounds, phenolics, and carotenoids gradually increased. |
format |
Text |
author |
Singh, Jaswant Singh, Rudra P. |
author_facet |
Singh, Jaswant Singh, Rudra P. |
author_sort |
Singh, Jaswant |
title |
Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
title_short |
Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
title_full |
Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
title_fullStr |
Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
title_full_unstemmed |
Adverse Effects of UV-B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
title_sort |
adverse effects of uv-b radiation on plants growing at schirmacher oasis, east antarctica |
publisher |
Medknow Publications & Media Pvt Ltd |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3989906 https://doi.org/10.4103/0971-6580.128815 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3989906 http://dx.doi.org/10.4103/0971-6580.128815 |
op_rights |
Copyright: © Toxicology International http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
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CC-BY-NC-SA |
op_doi |
https://doi.org/10.4103/0971-6580.128815 |
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Toxicology International |
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21 |
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