Diversity, distribution and phytotoxic and anti-Trypanosoma activities of cultivable fungi associated with Magellan sub-Antarctic strait and Maritime Antarctic macroalgae
de Freitas, M.S.; de Carvalho, C.R.; Pellizzari, F.M.; Mansilla, A.O.; Marambio, J.; de Almeida Alves, T.M.; Murta, S.M.F.; Zani, C.L.; Convey, P. ORCID: https://orcid.org/0000-0001-8497-9903; Rosa, L.H.. 2024 Diversity, distribution and phytotoxic and anti-Trypanosoma activities of cultivable fungi associated with Magellan sub-Antarctic strait and Maritime Antarctic macroalgae. Extremophiles, 28, 46. 14, pp. 10.1007/s00792-024-01363-1
Full text not available from this repository. (Request a copy)Abstract/Summary
We isolated and characterized the community of cultivable fungi associated with marine macroalgae present in the Magellan sub-Antarctic straits and the South Shetland Islands, Maritime Antarctica, and evaluated their production of bioactive metabolites. A total of 201 filamentous fungal isolates were obtained. The genera Antarctomyces, Pseudogymnoascus, Microdochium, Trichoderma, Cladosporium, Penicillium, Neoascochyta, Entomortierella and Linnemannia were associated with Antarctic macroalgae, with Neoascochyta paspali being the most abundant taxon. In contrast, 12 taxa representing Cadophora, Microdochium, Penicillium, Pseudogymnoascus were associated with macroalgae from the Magellan sub-Antarctic, with Penicillium dominating the assemblages. The diversity indices of the fungal communities associated with macroalgae in the two regions were similar. Among 177 fungal extracts assessed for metabolite production, 31 (17.5%) showed strong phytotoxic activity and 17 (9.6%) showed anti-Trypanosoma cruzi activity. Penicillium showed the highest phytotoxic and anti-Trypanosoma activity values. The detection of taxa in common between the polar and cold temperate zones reinforces the need for further investigations of the distribution of species in these distinct ecoregions. The detection of bioactive extracts produced particularly by Penicillium representatives reinforces the potential to obtain active molecules that can be explored as natural products or as sources of bioactive compounds with application in agriculture and biomedicine.
Item Type: | Publication - Article |
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Digital Object Identifier (DOI): | 10.1007/s00792-024-01363-1 |
ISSN: | 1431-0651 |
Additional Keywords: | Antarctica, fungi-seaweed association, agriculture, ecotone, extremophiles,, natural products, neglected tropical disease |
Date made live: | 18 Oct 2024 15:19 +0 (UTC) |
URI: | https://nora.nerc.ac.uk/id/eprint/537624 |
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