Dynamics of potentially protective compounds in Rhodophyta species from Patagonia (Argentina) exposed to solar radiation

Journal of Photochemistry and Photobiology. B, Biology
E Walter HelblingDonat-P Häder

Abstract

The impact of solar radiation upon potentially protective compounds (i.e., UV-absorbing compounds and carotenoids) was assessed in four Rhodophyte species from Patagonia (i.e., Ceramium sp. Lyngbye, Corallina officinalis Linnaeus, Callithamnion gaudichaudii Agardh and Porphyra columbina Montagne) during short-term (i.e., 46 h) experiments. Algae were exposed to solar radiation under two treatments (PAR only: 400-700 nm, and PAR+UVR: 280-700 nm) and sub-samples were taken every 3 h (or longer periods at night) to determine the spectral absorption characteristics and concentration of UV-absorbing compounds, carotenoids and photosynthetic pigments. Except for C. gaudichaudii which displayed a decrease in chl-a concentration throughout the experiment, photosynthetic pigments had small variations in all species. UV-absorbing compounds concentration had species-specific responses: Ceramium sp. was the only species in which UV-absorbing compounds concentration varied as a function of solar irradiance, with maximum values around local noon. In C. officinalis and P. columbina UV-absorbing compounds concentration increased as compared to that of chl-a; in Ceramium sp. and C. gaudichaudii, however, there was no relationship between UV-abs...Continue Reading

References

Mar 10, 2001·Journal of Photochemistry and Photobiology. B, Biology·A GrönigerD P Häder
Jan 21, 2004·Journal of Photochemistry and Photobiology. B, Biology·Donat-P HäderE Walter Helbling

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Citations

Jun 25, 2010·Journal of Photochemistry and Photobiology. B, Biology·Juntian Xu, Kunshan Gao
Sep 11, 2007·Journal of Photochemistry and Photobiology. B, Biology·Rajeshwar P SinhaDonat-P Häder
Jul 13, 2011·Protein Expression and Purification·Sanjiv K MishraSandhya Mishra
Apr 14, 2015·Journal of Photochemistry and Photobiology. B, Biology·Macarena S Valiñas, E Walter Helbling
Apr 2, 2005·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Virginia E VillafañeE Walter Helbling
Sep 19, 2018·Marine Drugs·Laura Núñez-PonsDaniela Giordano

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