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Phlorotannin Produc...
Phlorotannin Production and Lipid Oxidation as a Potential Protective Function Against High Photosynthetically Active and UV Radiation in Gametophytes of Alaria esculenta (Alariales, Phaeophyceae)
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- Steinhoff, Franciska S. (författare)
- Universität Bremen,Helmholtz Zentrum,Helmholtz Center,Department of Marine Botany, University of Bremen, Bremen, Germany / Section Functional Ecology, Department Seaweed Biology, Alfred-Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
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- Graeve, Martin (författare)
- Helmholtz Zentrum,Helmholtz Center,Section Ecological Chemistry, Alfred-Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
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- Bartoszek, Krzysztof, 1984 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för matematiska vetenskaper,Department of Mathematical Sciences,Chalmers tekniska högskola,Chalmers University of Technology,University of Gothenburg,Mathematical Sciences, Chalmers University of Technology and the University of Gothenburg, Sweden
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- Bischof, Kai (författare)
- Universität Bremen,Department of Marine Botany, University of Bremen, Bremen, Germany
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- Wiencke, Christian (författare)
- Helmholtz Zentrum,Helmholtz Center,Section Functional Ecology, Department Seaweed Biology, Alfred-Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
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(creator_code:org_t)
- 2011-11-03
- 2012
- Engelska.
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Ingår i: Photochemistry and Photobiology. - : Wiley. - 1751-1097 .- 0031-8655. ; 88:1, s. 46-57
- Relaterad länk:
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http://dx.doi.org/10...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Radiation damage can inter alia result in lipid peroxidation of macroalgal cell membranes. To prevent photo-oxidation within the cells, photoprotective substances such as phlorotannins are synthesized. In the present study, changes in total fatty acids (FA), FA composition and intra/extracellular phlorotannin contents were determined by gas chromatography and the Folin-Ciocalteu method to investigate the photoprotective potential of phlorotannins to prevent lipid peroxidation. Alaria esculenta juveniles (Phaeophyceae) were exposed over 20 days to high/low photosynthetically active radiation (PAR) in combination with UV radiation (UVR) in the treatments: PAB (low/high PAR + UV-B + UV-A), PA (low/high PAR + UV-A) or low/high PAR only. While extracellular phlorotannins increased after 10 days, intracellular phlorotannins increased with exposure time and PA and decreased under PAB. Interactive effects of time:radiation wavebands, time:PAR dose as well as radiation wavebands:PAR dose were observed. Low FA contents were detected in the PA and PAB treatments; interactive effects were observed between time:high PAR and PAB:high PAR. Total FA contents were correlated to extra/intracellular phlorotannin contents. Our results suggest that phlorotannins might play a role in intra/extracellular protection by absorption and oxidation processes. Changes in FA content/composition upon UVR and high PAR might be considered as an adaptive mechanism of the A. esculenta juveniles subjected to variations in solar irradiance.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Annan biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Other Biological Topics (hsv//eng)
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