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Cultivable fungi present in Antarctic soils: taxonomy, phylogeny, diversity, and bioprospecting of antiparasitic and herbicidal metabolites

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Abstract

Molecular biology techniques were used to identify 218 fungi from soil samples collected from four islands of Antarctica. These consisted of 22 taxa of 15 different genera belonging to the Zygomycota, Ascomycota, and Basidiomycota. Mortierella, Antarctomyces, Pseudogymnoascus, and Penicillium were the most frequently isolated genera and Penicillium tardochrysogenum, Penicillium verrucosus, Goffeauzyma gilvescens, and Mortierella sp. 2 the most abundant taxa. All fungal isolates were cultivated using solid-state fermentation to obtain their crude extracts. Pseudogymnoascus destructans, Mortierella parvispora, and Penicillium chrysogenum displayed antiparasitic activities, whilst extracts of P. destructans, Mortierella amoeboidea, Mortierella sp. 3, and P. tardochrysogenum showed herbicidal activities. Reported as pathogenic for bats, different isolates of P. destructans exhibited trypanocidal activities and herbicidal activity, and may be a source of bioactive molecules to be considered for chemotherapy against neglected tropical diseases. The abundant presence of P. destructans in soils of the four islands gives evidence supporting that soils in the Antarctic Peninsula constitute a natural source of strains of this genus, including some P. destructans strains that are phylogenetically close to those that infect bats in North America and Europe/Palearctic Asia.

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Acknowledgements

The authors thank the Program for Technological Development of Tools for Health-PDTIS-FIOCRUZ for use of its facilities.

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Correspondence to Luiz H. Rosa.

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The authors reported no conflict of interest.

Funding

We acknowledge the financial support from CNPq PROANTAR 407230/o-0, INCT Criosfera, FAPEMIG (0050-13), CAPES (23038.003478/2013-92), PROPP-UFOP and PRPq-UFMG.

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Communicated by A. Oren.

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Gomes, E.C.Q., Godinho, V.M., Silva, D.A.S. et al. Cultivable fungi present in Antarctic soils: taxonomy, phylogeny, diversity, and bioprospecting of antiparasitic and herbicidal metabolites. Extremophiles 22, 381–393 (2018). https://doi.org/10.1007/s00792-018-1003-1

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  • DOI: https://doi.org/10.1007/s00792-018-1003-1

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