Ocean acidification affects biological activities of seaweeds: A case study of Sargassum vulgare from Ischia volcanic CO 2 vents.

Autor: Kumar A; Centre for Climate Change Studies, Sathyabama Institute of Science and Technology, Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai, India; Sathyabama Marine Research Station, 123 Sallimalai Street, Rameswaram, India. Electronic address: amitkumar.cccs@sathyabama.ac.in., Buia MC; Center of Villa Dohrn Ischia - Benthic Ecology, Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, P.ta S. Pietro, Ischia, Naples, Italy., Palumbo A; Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy., Mohany M; Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, 11451, Saudi Arabia., Wadaan MAM; Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia., Hozzein WN; Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt., Beemster GTS; Integrated Molecular Plant Physiology Research Group (IMPRES) Department of Biology, Groenenborgerlaan 171, University of Antwerp, Antwerp, Belgium., AbdElgawad H; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt; Integrated Molecular Plant Physiology Research Group (IMPRES) Department of Biology, Groenenborgerlaan 171, University of Antwerp, Antwerp, Belgium.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2020 Apr; Vol. 259, pp. 113765. Date of Electronic Publication: 2019 Dec 17.
DOI: 10.1016/j.envpol.2019.113765
Abstrakt: We utilized volcanic CO 2 vents at Castello Aragonese off Ischia Island as a natural laboratory to investigate the effect of lowered pH/elevated CO 2 on the bioactivities of extracts from fleshy brown algae Sargassum vulgare C. Agardh. We analysed the carbohydrate levels, antioxidant capacity, antibacterial, antifungal, antiprotozoal, anticancer properties and antimutagenic potential of the algae growing at the acidified site (pH ∼ 6.7) and those of algae growing at the nearby control site Lacco Ameno (pH∼8.1). The results of the present study show that the levels of polysaccharides fucoidan and alginate were higher in the algal population at acidified site. In general, extracts for the algal population from the acidified site showed a higher antioxidant capacity, antilipidperoxidation, antibacterial, antifungal, antiprotozoal, anticancer activities and antimutagenic potential compared to the control population. The increased bioactivity in acidified population could be due to elevated levels of bioactive compounds of algae and/or associated microbial communities. In this snapshot study, we performed bioactivity assays but did not characterize the chemistry and source of presumptive bioactive compounds. Nevertheless, the observed improvement in the medicinal properties of S. vulgare in the acidified oceans provides a promising basis for future marine drug discovery.
(Copyright © 2019 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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