Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution
The soil community of Antarctic polar desert is comprised of few endemic species of bacteria, fungi, and invertebrates. Both filamentous and single cellular fungi have been isolated from a diversity of Antarctic soil types, but only yeast appear to be endemic to the polar desert soils. Although the...
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:orsp_reports-1206 2023-05-15T14:03:18+02:00 Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution Connell, Laurie B. 2006-10-10T07:00:00Z application/pdf https://digitalcommons.library.umaine.edu/orsp_reports/198 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1206&context=orsp_reports unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/orsp_reports/198 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1206&context=orsp_reports This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). University of Maine Office of Research Administration: Grant Reports Antarctic Polar desert Filamentous cellular fungi Single cellular fungi Desert Ecology Terrestrial and Aquatic Ecology text 2006 ftmaineuniv 2023-03-12T19:15:56Z The soil community of Antarctic polar desert is comprised of few endemic species of bacteria, fungi, and invertebrates. Both filamentous and single cellular fungi have been isolated from a diversity of Antarctic soil types, but only yeast appear to be endemic to the polar desert soils. Although the ecological roles of yeast in Antarctic soils is undefined, yeast may be the principal taxa in the heterotrophic communities that synthesize sterols required by soil invertebrates. In addition, yeast may be involved in accumulating and mobilizing growth limiting nutrients such as phosphorus into the polar desert food web. This multidisciplinary research will characterize the roles soil yeast play in the McMurdo Dry Valley ecosystem in order to better understand polar deserts and other extreme environments, as well as provide a foundation for incorporating yeast into biogeochemical models of temperate environments. Soil microbiota mediate most of the terrestrial ecosystem processes such as decomposition, soil respiration, the uptake and fixation of micro and macro-nutrients, detoxification of heavy metals, and serve as major global carbon sinks. The complexity of soil communities in temperate regions pose difficulties in studying the relationships between biotic and abiotic parameters of ecosystem function and the factors controlling populations of soil microbiota remain poorly understood. The extreme climate and relatively simple community structure of the continental Antarctica desert regions offer a unique opportunity to define interactions between soil organisms that are central to many ecosystems processes. The abundance and distribution of yeast in polar desert soils will be correlated with physical and chemical soil properties and these data will be stored and analyzed using Geographic Information Systems (GIS). Several physiological parameters will be explored in vitro to develop a basis for understanding the functional role(s) these organisms may play. The evolution of Dry Valley yeast will be addressed by ... Text Antarc* Antarctic Antarctica polar desert The University of Maine: DigitalCommons@UMaine Antarctic The Antarctic |
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Open Polar |
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The University of Maine: DigitalCommons@UMaine |
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ftmaineuniv |
language |
unknown |
topic |
Antarctic Polar desert Filamentous cellular fungi Single cellular fungi Desert Ecology Terrestrial and Aquatic Ecology |
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Antarctic Polar desert Filamentous cellular fungi Single cellular fungi Desert Ecology Terrestrial and Aquatic Ecology Connell, Laurie B. Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
topic_facet |
Antarctic Polar desert Filamentous cellular fungi Single cellular fungi Desert Ecology Terrestrial and Aquatic Ecology |
description |
The soil community of Antarctic polar desert is comprised of few endemic species of bacteria, fungi, and invertebrates. Both filamentous and single cellular fungi have been isolated from a diversity of Antarctic soil types, but only yeast appear to be endemic to the polar desert soils. Although the ecological roles of yeast in Antarctic soils is undefined, yeast may be the principal taxa in the heterotrophic communities that synthesize sterols required by soil invertebrates. In addition, yeast may be involved in accumulating and mobilizing growth limiting nutrients such as phosphorus into the polar desert food web. This multidisciplinary research will characterize the roles soil yeast play in the McMurdo Dry Valley ecosystem in order to better understand polar deserts and other extreme environments, as well as provide a foundation for incorporating yeast into biogeochemical models of temperate environments. Soil microbiota mediate most of the terrestrial ecosystem processes such as decomposition, soil respiration, the uptake and fixation of micro and macro-nutrients, detoxification of heavy metals, and serve as major global carbon sinks. The complexity of soil communities in temperate regions pose difficulties in studying the relationships between biotic and abiotic parameters of ecosystem function and the factors controlling populations of soil microbiota remain poorly understood. The extreme climate and relatively simple community structure of the continental Antarctica desert regions offer a unique opportunity to define interactions between soil organisms that are central to many ecosystems processes. The abundance and distribution of yeast in polar desert soils will be correlated with physical and chemical soil properties and these data will be stored and analyzed using Geographic Information Systems (GIS). Several physiological parameters will be explored in vitro to develop a basis for understanding the functional role(s) these organisms may play. The evolution of Dry Valley yeast will be addressed by ... |
format |
Text |
author |
Connell, Laurie B. |
author_facet |
Connell, Laurie B. |
author_sort |
Connell, Laurie B. |
title |
Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
title_short |
Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
title_full |
Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
title_fullStr |
Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
title_full_unstemmed |
Yeast in the Antarctic Dry Valleys: Biological Role, Distribution, and Evolution |
title_sort |
yeast in the antarctic dry valleys: biological role, distribution, and evolution |
publisher |
DigitalCommons@UMaine |
publishDate |
2006 |
url |
https://digitalcommons.library.umaine.edu/orsp_reports/198 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1206&context=orsp_reports |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica polar desert |
genre_facet |
Antarc* Antarctic Antarctica polar desert |
op_source |
University of Maine Office of Research Administration: Grant Reports |
op_relation |
https://digitalcommons.library.umaine.edu/orsp_reports/198 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1206&context=orsp_reports |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
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1766273924764532736 |