caa a22 4500 378925164 CHVBK 20180305123615.0 cr unu---uuuuu 161128e20040226xx s 000 0 eng 10.1515/BOT.2004.003 doi (NATIONALLICENCE)gruyter-10.1515/BOT.2004.003 Ultraviolet-absorbing mycosporine-like amino acids in red macroalgae from Chile [Elektronische Daten] [Pirjo Huovinen, Iván Gómez, Félix L. Figueroa, Nancy Ulloa, Viviana Morales, Charlotte Lovengreen] The aim of this study was to survey the content of mycosporine-like amino acids (MAAs) in macroalgae from southern Chile. During the summer 2001-2002, 13 red algal species were collected from the intertidal zone at two sites. All species studied contained various MAA compounds. The concentrations of MAAs in Porphyra columbina were high (7.2-10.6 mg g−1 dw). The second highest MAA concentrations were detected in Gelidium sp. (2.2-6.8 mg g−1 dw), followed by Mazzaella laminarioides (2.1-4.8 mg g−1 dw) and Grateloupia doryphora (3.5-4.4 mg g−1 dw). Six different MAAs (mycosporineglycine, shinorine, porphyra-334, palythine, asterina-330, palythinol) were identified, shinorine being the most common and present in all algae. The two-week period of this study was characterized by high solar irradiance (average daily maxima of UV-B 2.0 W m−2, UV-A 63 W m−2, photosynthetically active radiation wPARx 2263 μmol m−2 s−1 on clear days), which may well explain the high levels of MAAs in these algae. These results are in agreement with others demonstrating the presence of MAAs in various red macroalgae from the eulittoral zone, concentrations generally being higher in geographical locations with high intensities of solar irradiation, which suggests their role as a photoprotective mechanism particularly in this group of algae. Copyright © 2004 by Walter de Gruyter GmbH & Co. KG Hydrobiology nationallicence Mycology, fungi nationallicence Botany & plant sciences nationallicence Huovinen Pirjo aut Gómez Iván aut Figueroa Félix L. aut Ulloa Nancy aut Morales Viviana aut Lovengreen Charlotte aut Botanica Marina Walter de Gruyter 47/1(2004-02-26), 21-29 0006-8055 47:1<21 2004 47 botm https://doi.org/10.1515/BOT.2004.003 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1515/BOT.2004.003 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Huovinen Pirjo aut NATIONALLICENCE 700 1- Gómez Iván aut NATIONALLICENCE 700 1- Figueroa Félix L. aut NATIONALLICENCE 700 1- Ulloa Nancy aut NATIONALLICENCE 700 1- Morales Viviana aut NATIONALLICENCE 700 1- Lovengreen Charlotte aut NATIONALLICENCE 773 0- Botanica Marina Walter de Gruyter 47/1(2004-02-26), 21-29 0006-8055 47:1<21 2004 47 botm CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter