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Mycosporine-Like Amino Acids (MAAs) in Zooplankton
Open AccessArticle

Seasonal Variation of Mycosporine-Like Amino Acids in Three Subantarctic Red Seaweeds

1
Laboratorio de Ecofisiología y Biotecnología de Algas (LEBA), Facultad de Ciencias, Universidad de Magallanes, Punta Arenas 620000, Chile
2
Laboratory of Aquatic Environmental Research, Center of Advanced Studies, Universidad de Playa Ancha, Traslaviña 450, Viña del Mar 581782, Chile
3
HUB-AMBIENTAL UPLA, Vicerrectoría de Investigación Postgrado e Innovación, Universidad de Playa Ancha, Av. Carvallo 270, Valparaíso 2340000, Chile
4
Universidad de Málaga, Instituto Universitario de Biotecnología y Desarrollo Azul (IBYDA), Departamento de Ecología, Facultad de Ciencias, 29071 Malaga, Spain
5
Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Punta Arenas 620000, Chile
6
Network for Extreme Environments Research, NEXER-Universidad de Magallanes, casilla 113-D, Punta Arenas 620000, Chile
*
Author to whom correspondence should be addressed.
Mar. Drugs 2020, 18(2), 75; https://doi.org/10.3390/md18020075
Received: 30 November 2019 / Revised: 10 January 2020 / Accepted: 21 January 2020 / Published: 24 January 2020
(This article belongs to the Special Issue Mycosporine-Like Amino Acids from Marine Resource)
UV-absorbing compounds, such as mycosporine-like amino acids (MAAs), are a group of secondary metabolites present in many marine species, including red seaweeds. In these organisms, the content and proportion of the composition of MAAs vary, depending on the species and several environmental factors. Its high cosmetic interest calls for research on the content and composition of MAAs, as well as the dynamics of MAAs accumulation in seaweeds from different latitudes. Therefore, this study aimed to survey the content of UV-absorbing MAAs in three Subantarctic red seaweeds during a seasonal cycle. Using spectrophotometric and HPLC techniques, the content and composition of MAAs of intertidal Iridaea tuberculosa, Nothogenia fastigiate, and Corallina officinalis were assessed. Some samples were also analyzed using high-resolution mass spectrometry coupled with HPLC-ESI-MS in order to identify more precisely the MAA composition. I. tuberculosa exhibited the highest MAA values (above 1 mg g−1 of dried mass weight), while C. officinalis showed values not exceeding 0.4 mg g−1. Porphyra-334 was the main component in N. fastigiata, whereas I. tuberculosa and C. officinalis exhibited a high content of palythine. Both content and composition of MAAs varied seasonally, with high concentration recorded in different seasons, depending on the species, i.e., winter (I. tuberculosa), spring (N. fastigiata), and summer (C. officinalis). HPLC-ESI-MS allowed us to identify seven different MAAs. Two were recorded for the first time in seaweeds from Subantarctic areas (mycosporine-glutamic acid and palythine-serine), and we also recorded an eighth UV-absorbing compound which remains unidentified. View Full-Text
Keywords: Corallina; Iridaea; Mycosporine-like amino acids; Nothogenia; red algae Corallina; Iridaea; Mycosporine-like amino acids; Nothogenia; red algae
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Jofre, J.; Celis-Plá, P.S.M.; Figueroa, F.L.; Navarro, N.P. Seasonal Variation of Mycosporine-Like Amino Acids in Three Subantarctic Red Seaweeds. Mar. Drugs 2020, 18, 75.

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