| The role of external polyamines on photosynthetic responses, lipid peroxidation, protein and chlorophyll a content under the UV-A (352nm) stress in Physcia semipinnata. | |
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MedLine Citation:
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PMID: 18162406 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Physcia semipinnata was exposed to UV-A (352nm) and visible light (210, 800 and 2000mW/cm2) for 30min, 1, 2, 24, and 48h to seek the alterations in the PSII photosynthetic quantum yield, in response to radiation. Chlorophyll a fluorescence did not influence exposure to light, 210, 800 and 2000mW/cm2. Significant alterations of the photosynthetic quantum yield ratio occurred in response to increase in UV-A exposure time. The photosynthetic quantum yield ratio decreased in P. semipinnata following exposure to UV-A for 24 and 48h. The thalli of P. semipinnata treated with 1mM polyamine were not influenced during the exposure to UV-A for 24 and 48h. It was also found that exogenously spd added samples had higher chla content than spm and put added samples. In this study, we showed that lipid peroxidation levels between UV-A-treated samples and exogenously polyamine treated samples that were previously exposed to UV-A for 24 and 48h were significantly decreased. This result is the first record to indicate that external polyamines might have some protective role on photosystem II and membrane against UV-A stress. |
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Authors:
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Dilek Unal; Inci Tuney; Atakan Sukatar |
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Publication Detail:
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Type: Journal Article Date: 2007-11-28 |
Journal Detail:
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Title: Journal of photochemistry and photobiology. B, Biology Volume: 90 ISSN: 1011-1344 ISO Abbreviation: J. Photochem. Photobiol. B, Biol. Publication Date: 2008 Jan |
Date Detail:
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Created Date: 2008-01-21 Completed Date: 2008-04-18 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8804966 Medline TA: J Photochem Photobiol B Country: Switzerland |
Other Details:
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Languages: eng Pagination: 64-8 Citation Subset: IM |
Affiliation:
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University of Ege, Faculty of Science, Department of Biology 35100, Bornova-Izmir, Turkey. dilek.unal@mail.ege.edu.tr |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Ascomycota
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drug effects*,
metabolism,
radiation effects* Chlorophyll / metabolism* Fungal Proteins / biosynthesis* Lipid Peroxidation* / drug effects, radiation effects Photosynthesis* / drug effects, radiation effects Polyamines / pharmacology* Ultraviolet Rays |
| Chemical | |
Reg. No./Substance:
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0/Fungal Proteins; 0/Polyamines; 1406-65-1/Chlorophyll; 479-61-8/chlorophyll a |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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