Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi
ABSTRACT We tested the effects of solar radiation, and UV-B in particular, on the growth of Antarctic terrestrial fungi. The growth responses to solar radiation of five fungi, Geomyces pannorum , Phoma herbarum , Pythium sp., Verticillium sp., and Mortierella parvispora , each isolated from Antarcti...
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Online Access: | http://dx.doi.org/10.1128/aem.69.3.1488-1491.2003 https://journals.asm.org/doi/pdf/10.1128/AEM.69.3.1488-1491.2003 |
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crasmicro:10.1128/aem.69.3.1488-1491.2003 2024-09-15T17:40:29+00:00 Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi Hughes, Kevin A. Lawley, Blair Newsham, Kevin K. 2003 http://dx.doi.org/10.1128/aem.69.3.1488-1491.2003 https://journals.asm.org/doi/pdf/10.1128/AEM.69.3.1488-1491.2003 en eng American Society for Microbiology https://journals.asm.org/non-commercial-tdm-license Applied and Environmental Microbiology volume 69, issue 3, page 1488-1491 ISSN 0099-2240 1098-5336 journal-article 2003 crasmicro https://doi.org/10.1128/aem.69.3.1488-1491.2003 2024-08-05T04:09:41Z ABSTRACT We tested the effects of solar radiation, and UV-B in particular, on the growth of Antarctic terrestrial fungi. The growth responses to solar radiation of five fungi, Geomyces pannorum , Phoma herbarum , Pythium sp., Verticillium sp., and Mortierella parvispora , each isolated from Antarctic terrestrial habitats, were examined on an agar medium in the natural Antarctic environment. A 3-h exposure to solar radiation of >287 nm reduced the hyphal extension rates of all species relative to controls kept in the dark. Pythium sp. cultures exposed to solar radiation for 1.5 h on five consecutive days were most sensitive to radiation of >287 nm, but radiation of >313 nm also inhibited growth to a lesser extent. Radiation of >400 nm had no effect on hyphal growth relative to controls kept in the dark. Short-wave solar UV-B radiation of between 287 and 305 nm inhibited the growth of Pythium sp. hyphae on and below the surface of the agar medium after 24 h, but radiation of ≥345 nm only reduced the growth of surface hyphae. Similar detrimental effects of UV-B on surface and, to a lesser extent, submerged hyphae of all five fungi were shown in the laboratory by using artificial UV-B from fluorescent lamps. A comparison of growth responses to solar radiation and temperature showed that the species that were most resistant to UV radiation grew fastest at higher temperatures. These data suggest that solar UV-B reduces the growth of fungi on the soil surface in the Antarctic terrestrial environment. Article in Journal/Newspaper Antarc* Antarctic ASM Journals (American Society for Microbiology) Applied and Environmental Microbiology 69 3 1488 1491 |
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Open Polar |
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ASM Journals (American Society for Microbiology) |
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crasmicro |
language |
English |
description |
ABSTRACT We tested the effects of solar radiation, and UV-B in particular, on the growth of Antarctic terrestrial fungi. The growth responses to solar radiation of five fungi, Geomyces pannorum , Phoma herbarum , Pythium sp., Verticillium sp., and Mortierella parvispora , each isolated from Antarctic terrestrial habitats, were examined on an agar medium in the natural Antarctic environment. A 3-h exposure to solar radiation of >287 nm reduced the hyphal extension rates of all species relative to controls kept in the dark. Pythium sp. cultures exposed to solar radiation for 1.5 h on five consecutive days were most sensitive to radiation of >287 nm, but radiation of >313 nm also inhibited growth to a lesser extent. Radiation of >400 nm had no effect on hyphal growth relative to controls kept in the dark. Short-wave solar UV-B radiation of between 287 and 305 nm inhibited the growth of Pythium sp. hyphae on and below the surface of the agar medium after 24 h, but radiation of ≥345 nm only reduced the growth of surface hyphae. Similar detrimental effects of UV-B on surface and, to a lesser extent, submerged hyphae of all five fungi were shown in the laboratory by using artificial UV-B from fluorescent lamps. A comparison of growth responses to solar radiation and temperature showed that the species that were most resistant to UV radiation grew fastest at higher temperatures. These data suggest that solar UV-B reduces the growth of fungi on the soil surface in the Antarctic terrestrial environment. |
format |
Article in Journal/Newspaper |
author |
Hughes, Kevin A. Lawley, Blair Newsham, Kevin K. |
spellingShingle |
Hughes, Kevin A. Lawley, Blair Newsham, Kevin K. Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
author_facet |
Hughes, Kevin A. Lawley, Blair Newsham, Kevin K. |
author_sort |
Hughes, Kevin A. |
title |
Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
title_short |
Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
title_full |
Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
title_fullStr |
Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
title_full_unstemmed |
Solar UV-B Radiation Inhibits the Growth of Antarctic Terrestrial Fungi |
title_sort |
solar uv-b radiation inhibits the growth of antarctic terrestrial fungi |
publisher |
American Society for Microbiology |
publishDate |
2003 |
url |
http://dx.doi.org/10.1128/aem.69.3.1488-1491.2003 https://journals.asm.org/doi/pdf/10.1128/AEM.69.3.1488-1491.2003 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Applied and Environmental Microbiology volume 69, issue 3, page 1488-1491 ISSN 0099-2240 1098-5336 |
op_rights |
https://journals.asm.org/non-commercial-tdm-license |
op_doi |
https://doi.org/10.1128/aem.69.3.1488-1491.2003 |
container_title |
Applied and Environmental Microbiology |
container_volume |
69 |
container_issue |
3 |
container_start_page |
1488 |
op_container_end_page |
1491 |
_version_ |
1810486524018425856 |