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 o...
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ftinformaticsojs:oai:oai.informaticsjournals.com:article/20987 2023-05-15T13:57:55+02:00 Adverse Effects of UV‑B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica Singh, Jaswant Singh, Rudra P. 2018-04-25 application/pdf https://www.informaticsjournals.com/index.php/toxi/article/view/20987 eng eng Informatics Publishing Limited and The Society of Toxicology, India https://www.informaticsjournals.com/index.php/toxi/article/view/20987/17283 https://www.informaticsjournals.com/index.php/toxi/article/view/20987 Copyright (c) 2018 Toxicology International Toxicology International; Volume 21, Issue 1, January-April 2014; 101-106 0976-5131 0971-6580 Carotenoids phenolics total chlorophyll UV‑B absorbing compounds UV‑B radiation info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2018 ftinformaticsojs 2022-07-27T14:36:06Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Informatics Journals (Informatics Publishing Ltd.) Antarctic East Antarctica |
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Open Polar |
collection |
Informatics Journals (Informatics Publishing Ltd.) |
op_collection_id |
ftinformaticsojs |
language |
English |
topic |
Carotenoids phenolics total chlorophyll UV‑B absorbing compounds UV‑B radiation |
spellingShingle |
Carotenoids phenolics total chlorophyll UV‑B absorbing compounds UV‑B radiation Singh, Jaswant Singh, Rudra P. Adverse Effects of UV‑B Radiation on Plants Growing at Schirmacher Oasis, East Antarctica |
topic_facet |
Carotenoids phenolics total chlorophyll UV‑B absorbing compounds UV‑B radiation |
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 |
Article in Journal/Newspaper |
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 |
Informatics Publishing Limited and The Society of Toxicology, India |
publishDate |
2018 |
url |
https://www.informaticsjournals.com/index.php/toxi/article/view/20987 |
geographic |
Antarctic East Antarctica |
geographic_facet |
Antarctic East Antarctica |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
Toxicology International; Volume 21, Issue 1, January-April 2014; 101-106 0976-5131 0971-6580 |
op_relation |
https://www.informaticsjournals.com/index.php/toxi/article/view/20987/17283 https://www.informaticsjournals.com/index.php/toxi/article/view/20987 |
op_rights |
Copyright (c) 2018 Toxicology International |
_version_ |
1766265858748841984 |