Impact of UV-B radiation on photosynthesis – an overview
Ultraviolet-B (UV-B) radiation constitutes a minor part of the solar spectrum, being most of this solar radiation absorbed by the UV-screening stratospheric ozone layer. Yet, a global depletion of the ozone layer, largely due to the release of chlorofluorocarbons caused by human activities, has resu...
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| Veröffentlicht in: | Emirates Journal of Food and Agriculture 2012-12, Vol.24 (6), p.546 |
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| container_title | Emirates Journal of Food and Agriculture |
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| creator | J. C. Lidon, Fernando Reboredo, Fernando H. Leitão, António E. Silva, Maria Manuela A. Duarte, Maria Paula Ramalho, José C. |
| description | Ultraviolet-B (UV-B) radiation constitutes a minor part of the solar spectrum, being most of this solar radiation absorbed by the UV-screening stratospheric ozone layer. Yet, a global depletion of the ozone layer, largely due to the release of chlorofluorocarbons caused by human activities, has resulted in an increase of solar UV-B radiation at the earth's surface. Accordingly, in the temperate latitudes, such ozone decrease reached ca. 3% and 6% in the North and South hemispheres, respectively, between 2002 and 2005 (as compared to the 1970s). Despite the uncertainty of long-term predictions, it is also estimated an UV-B increase of 5-10% over temperate latitudes within the next 15 years In this context, this work aim at to present an overview of plants sensitivity/tolerance to UV-B irradiation mostly considering the key photosynthetic metabolism. |
| doi_str_mv | 10.9755/ejfa.v24i6.14673 |
| format | Article |
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| ispartof | Emirates Journal of Food and Agriculture, 2012-12, Vol.24 (6), p.546 |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Chlorofluorocarbons Free radicals Nitric oxide Oxidative stress Ozone Photosynthesis Regulation Seasons Stratosphere Ultraviolet radiation |
| title | Impact of UV-B radiation on photosynthesis – an overview |
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