Cold adaptation in Arctic and Antarctic fungi
Summary Growth and activity at low temperatures and possible physiological and ecological mechanisms underlying survival of fungi isolated from the cold Arctic and Antarctic are reviewed here. Physiological mechanisms conferring cold tolerance in fungi are complex; they include increases in intracel...
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Online Access: | http://dx.doi.org/10.1046/j.1469-8137.2001.00177.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1469-8137.2001.00177.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x |
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crwiley:10.1046/j.1469-8137.2001.00177.x 2024-09-30T14:25:59+00:00 Cold adaptation in Arctic and Antarctic fungi Robinson, Clare H. 2001 http://dx.doi.org/10.1046/j.1469-8137.2001.00177.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1469-8137.2001.00177.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor New Phytologist volume 151, issue 2, page 341-353 ISSN 0028-646X 1469-8137 journal-article 2001 crwiley https://doi.org/10.1046/j.1469-8137.2001.00177.x 2024-09-11T04:13:41Z Summary Growth and activity at low temperatures and possible physiological and ecological mechanisms underlying survival of fungi isolated from the cold Arctic and Antarctic are reviewed here. Physiological mechanisms conferring cold tolerance in fungi are complex; they include increases in intracellular trehalose and polyol concentrations and unsaturated membrane lipids as well as secretion of antifreeze proteins and enzymes active at low temperatures. A combination of these mechanisms is necessary for the psychrotroph or psychrophile to function. Ecological mechanisms for survival might include cold avoidance; fungal spores may germinate annually in spring and summer, so avoiding the coldest months. Whether spores survive over winter or are dispersed from elsewhere is unknown. There are also few data on persistence of basidiomycete vs microfungal mycelia and on the relationship between low temperatures and the predominance of sterile mycelia in tundra soils. Acclimation of mycelia is a physiological adaptation to subzero temperatures; however, the extent to which this occurs in the natural environment is unclear. Melanin in dark septate hyphae, which predominate in polar soils, could protect hyphae from extreme temperatures and play a significant role in their persistence from year to year. Article in Journal/Newspaper Antarc* Antarctic Arctic Tundra Wiley Online Library Arctic Antarctic New Phytologist 151 2 341 353 |
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Wiley Online Library |
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English |
description |
Summary Growth and activity at low temperatures and possible physiological and ecological mechanisms underlying survival of fungi isolated from the cold Arctic and Antarctic are reviewed here. Physiological mechanisms conferring cold tolerance in fungi are complex; they include increases in intracellular trehalose and polyol concentrations and unsaturated membrane lipids as well as secretion of antifreeze proteins and enzymes active at low temperatures. A combination of these mechanisms is necessary for the psychrotroph or psychrophile to function. Ecological mechanisms for survival might include cold avoidance; fungal spores may germinate annually in spring and summer, so avoiding the coldest months. Whether spores survive over winter or are dispersed from elsewhere is unknown. There are also few data on persistence of basidiomycete vs microfungal mycelia and on the relationship between low temperatures and the predominance of sterile mycelia in tundra soils. Acclimation of mycelia is a physiological adaptation to subzero temperatures; however, the extent to which this occurs in the natural environment is unclear. Melanin in dark septate hyphae, which predominate in polar soils, could protect hyphae from extreme temperatures and play a significant role in their persistence from year to year. |
format |
Article in Journal/Newspaper |
author |
Robinson, Clare H. |
spellingShingle |
Robinson, Clare H. Cold adaptation in Arctic and Antarctic fungi |
author_facet |
Robinson, Clare H. |
author_sort |
Robinson, Clare H. |
title |
Cold adaptation in Arctic and Antarctic fungi |
title_short |
Cold adaptation in Arctic and Antarctic fungi |
title_full |
Cold adaptation in Arctic and Antarctic fungi |
title_fullStr |
Cold adaptation in Arctic and Antarctic fungi |
title_full_unstemmed |
Cold adaptation in Arctic and Antarctic fungi |
title_sort |
cold adaptation in arctic and antarctic fungi |
publisher |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1046/j.1469-8137.2001.00177.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1469-8137.2001.00177.x https://nph.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-8137.2001.00177.x |
geographic |
Arctic Antarctic |
geographic_facet |
Arctic Antarctic |
genre |
Antarc* Antarctic Arctic Tundra |
genre_facet |
Antarc* Antarctic Arctic Tundra |
op_source |
New Phytologist volume 151, issue 2, page 341-353 ISSN 0028-646X 1469-8137 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1469-8137.2001.00177.x |
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New Phytologist |
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151 |
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2 |
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341 |
op_container_end_page |
353 |
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1811646535128055808 |