CESIMAR - CENPAT   25625
CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Structure variability of sulfated polysaccharides from Codium subantarcticum collected in the Beagle Chanel
Autor/es:
MATOS, MARINA NADIA; CIANCIA, MARINA
Lugar:
Buenos Aires
Reunión:
Simposio; 3rd Argentinian Simposium in Glycobiology; 2019
Institución organizadora:
Universidad Nacional de San Martín
Resumen:
Green seaweed Codium subantarcticum distribution in Argentina is restricted to the southern Patagonia. In this study, the geographic variability and influence of human impact on sulfated polysaccharides (SP) from C. subantarcticum was investigated. Algae specimens were collected manually by freediving in 6 sites (3 samples/site) in Beagle Channel coast, from west to east: Zaratiegui Inlet, Tierra del Fuego National Park (S1); Cauquenes Beach, Golondrina Bay (S2); Airport, Ushuaia Peninsula (S3); Orion Plant, Ushuaia Bay (S4); Larga Beach, Ushuaia Bay (S5); Paraná Point (S6). Cleaned dry algae were milled and cell wall material was extracted with water, liofilizated and analyzed. Total carbohydrates content, sulfate, pyruvic acid, and proteins (54%, 18%, 4%, 18%, respectively) showed no significant differences between sites. Monosaccharide composition in average was: Gal 55%, Ara 25%, Xyl 14%, Man 3%, Glu 2%. In this study, Ara was slightly higher in more impacted sites (S3, 28% and S4, 26%) and lower in low impacted sites (S1, 24% and S6, 23%), while Gal showed the opposite pattern: S3 51%, S4 52%, S1 58%, S6 59%. Nevertheless, no significant differences were observed between sites. This work indicated that in the studied region, there is no significant variation in SP composition between the investigated collection sites. This observation put light on the robustness of structural studies on SP, in the measured parameters, which is especially important for future applications