Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes
We evaluated the diversity and enzymatic activities of culturable fungi recovered from cotton baits submerged for 2 years in Hennequin Lake, King George Island, and from benthic biofilms in Kroner Lake, Deception Island, South Shetland Islands, maritime Antarctica. A total of 154 fungal isolates wer...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484858/ http://www.ncbi.nlm.nih.gov/pubmed/36274089 https://doi.org/10.1007/s42770-022-00834-x |
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ftpubmed:oai:pubmedcentral.nih.gov:10484858 2023-11-12T04:02:02+01:00 Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes de Souza, Láuren Machado Drumond Ogaki, Mayara Bapstitucci Teixeira, Elisa Amorim Amâncio de Menezes, Graciéle Cunha Alves Convey, Peter Rosa, Carlos Augusto Rosa, Luiz Henrique 2022-10-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484858/ http://www.ncbi.nlm.nih.gov/pubmed/36274089 https://doi.org/10.1007/s42770-022-00834-x en eng Springer International Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484858/ http://www.ncbi.nlm.nih.gov/pubmed/36274089 http://dx.doi.org/10.1007/s42770-022-00834-x © The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. Braz J Microbiol Environmental Microbiology - Research Paper Text 2022 ftpubmed https://doi.org/10.1007/s42770-022-00834-x 2023-10-29T00:42:00Z We evaluated the diversity and enzymatic activities of culturable fungi recovered from cotton baits submerged for 2 years in Hennequin Lake, King George Island, and from benthic biofilms in Kroner Lake, Deception Island, South Shetland Islands, maritime Antarctica. A total of 154 fungal isolates were obtained, representing in rank abundance the phyla Ascomycota, Basidiomycota and Mortierellomycota. Thelebolus globosus, Goffeauzyma sp., Pseudogymnoascus verrucosus and Metschnikowia australis were the most abundant taxa. The fungal community obtained from the biofilm was more diverse and richer than that recovered from the cotton baits. However, diversity indices suggested that the lakes may harbour further fungal diversity. The capabilities of all cultured fungi to produce the extracellular enzymes cellulase, protease, lipase, agarase, carrageenase, invertase, amylase, esterase, pectinase, inulinase and gelatinase at low temperature were evaluated. All enzymes were detected, but the most widely produced were protease and pectinase. The best enzymatic indices were obtained from Holtermanniella wattica (for invertase, esterase), Goffeauzyma sp. (amylase), Metschnikowia australis (protease), Mrakia blollopis (cellulase, pectinase), Pseudogymnoascus verrucosus (agarase, carrageenase) and Leucosporidium fragarium (inulinase). The detection of multiple enzymes reinforces the ecological role of fungi in nutrient cycling in Antarctic lakes, making nutrients available to the complex aquatic food web. Furthermore, such low-temperature-active enzymes may find application in different biotechnological processes, such as in the textile, pharmaceutical, food, detergent and paper industries, as well as environmental application in pollutant bioremediation processes. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s42770-022-00834-x. Text Antarc* Antarctic Antarctica Deception Island King George Island South Shetland Islands PubMed Central (PMC) Brazilian Journal of Microbiology 54 3 1923 1933 |
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Open Polar |
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PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Environmental Microbiology - Research Paper |
spellingShingle |
Environmental Microbiology - Research Paper de Souza, Láuren Machado Drumond Ogaki, Mayara Bapstitucci Teixeira, Elisa Amorim Amâncio de Menezes, Graciéle Cunha Alves Convey, Peter Rosa, Carlos Augusto Rosa, Luiz Henrique Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
topic_facet |
Environmental Microbiology - Research Paper |
description |
We evaluated the diversity and enzymatic activities of culturable fungi recovered from cotton baits submerged for 2 years in Hennequin Lake, King George Island, and from benthic biofilms in Kroner Lake, Deception Island, South Shetland Islands, maritime Antarctica. A total of 154 fungal isolates were obtained, representing in rank abundance the phyla Ascomycota, Basidiomycota and Mortierellomycota. Thelebolus globosus, Goffeauzyma sp., Pseudogymnoascus verrucosus and Metschnikowia australis were the most abundant taxa. The fungal community obtained from the biofilm was more diverse and richer than that recovered from the cotton baits. However, diversity indices suggested that the lakes may harbour further fungal diversity. The capabilities of all cultured fungi to produce the extracellular enzymes cellulase, protease, lipase, agarase, carrageenase, invertase, amylase, esterase, pectinase, inulinase and gelatinase at low temperature were evaluated. All enzymes were detected, but the most widely produced were protease and pectinase. The best enzymatic indices were obtained from Holtermanniella wattica (for invertase, esterase), Goffeauzyma sp. (amylase), Metschnikowia australis (protease), Mrakia blollopis (cellulase, pectinase), Pseudogymnoascus verrucosus (agarase, carrageenase) and Leucosporidium fragarium (inulinase). The detection of multiple enzymes reinforces the ecological role of fungi in nutrient cycling in Antarctic lakes, making nutrients available to the complex aquatic food web. Furthermore, such low-temperature-active enzymes may find application in different biotechnological processes, such as in the textile, pharmaceutical, food, detergent and paper industries, as well as environmental application in pollutant bioremediation processes. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s42770-022-00834-x. |
format |
Text |
author |
de Souza, Láuren Machado Drumond Ogaki, Mayara Bapstitucci Teixeira, Elisa Amorim Amâncio de Menezes, Graciéle Cunha Alves Convey, Peter Rosa, Carlos Augusto Rosa, Luiz Henrique |
author_facet |
de Souza, Láuren Machado Drumond Ogaki, Mayara Bapstitucci Teixeira, Elisa Amorim Amâncio de Menezes, Graciéle Cunha Alves Convey, Peter Rosa, Carlos Augusto Rosa, Luiz Henrique |
author_sort |
de Souza, Láuren Machado Drumond |
title |
Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
title_short |
Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
title_full |
Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
title_fullStr |
Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
title_full_unstemmed |
Communities of culturable freshwater fungi present in Antarctic lakes and detection of their low-temperature-active enzymes |
title_sort |
communities of culturable freshwater fungi present in antarctic lakes and detection of their low-temperature-active enzymes |
publisher |
Springer International Publishing |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484858/ http://www.ncbi.nlm.nih.gov/pubmed/36274089 https://doi.org/10.1007/s42770-022-00834-x |
genre |
Antarc* Antarctic Antarctica Deception Island King George Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctica Deception Island King George Island South Shetland Islands |
op_source |
Braz J Microbiol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10484858/ http://www.ncbi.nlm.nih.gov/pubmed/36274089 http://dx.doi.org/10.1007/s42770-022-00834-x |
op_rights |
© The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia 2022. Springer Nature or its licensor holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
op_doi |
https://doi.org/10.1007/s42770-022-00834-x |
container_title |
Brazilian Journal of Microbiology |
container_volume |
54 |
container_issue |
3 |
container_start_page |
1923 |
op_container_end_page |
1933 |
_version_ |
1782333637037916160 |