Fungi in glacial ice of Antarctica: diversity, distribution and bioprospecting of bioactive compounds

Extremophiles : Life Under Extreme Conditions
Graciéle Cunha Alves de MenezesLuiz H Rosa

Abstract

We identified cultivable fungi present in the glacial ice fragments collected in nine sites across Antarctica Peninsula and assessed their abilities to produce bioactive compounds. Three ice fragments with approximately 20 kg were collected, melted and 3 L filtered through of 0.45 µm sterilized membranes, which were placed on the media Sabouraud agar and minimal medium incubated at 10 °C. We collected 66 isolates classified into 27 taxa of 14 genera. Penicillium palitans, Penicillium sp. 1, Thelebolus balaustiformis, Glaciozyma antarctica, Penicillium sp. 7, Rhodotorula mucilaginosa, and Rhodotorula dairenensis had the highest frequencies. The diversity and richness of the fungal community were high with moderate dominance. Penicillium species were present in all samples, with Penicillium chrysogenum showing the broadest distribution. P. chrysogenum, P. palitans, and Penicillium spp. had trypanocidal, leishmanicidal, and herbicidal activities, with P. chrysogenum having the broadest and highest capability. 1H NMR signals revealed the presence of highly functionalized secondary metabolites in the bioactive extracts. Despite extreme environmental conditions, glacial ice harbours a diverse fungal community, including species never...Continue Reading

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Citations

Nov 9, 2020·Microbial Ecology·Luiz Henrique RosaPaulo Eduardo Aguiar Saraiva Câmara
Jan 7, 2021·Microbial Ecology·Mayara Baptistucci OgakiLuiz Henrique Rosa
Apr 4, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Manuel Jesús Chan-BacabBenjamín Otto Ortega-Morales
Apr 11, 2021·Extremophiles : Life Under Extreme Conditions·Mayara Baptistucci OgakiLuiz Henrique Rosa
Sep 17, 2021·Microbiology Resource Announcements·Anna C SimpsonKasthuri Venkateswaran

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Methods Mentioned

BETA
PCA

Software Mentioned

Basic Locus Search Alignment Tool
MEGA
BLASTn
BLAST
PAST

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