Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy
10 pages, and photos, and tables statistics. In this microscopy study, we show that microorganisms comprising many endolithic communities of the McMurdo Dry Valleys of Antarctica appear in different physiological states. Live/dead microbial fluorescence stains were used to identify the state of micr...
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Language: | English |
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Online Access: | http://hdl.handle.net/10261/19658 https://doi.org/10.1016/j.femsec.2004.06.010 |
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ftcsic:oai:digital.csic.es:10261/19658 2024-02-11T09:56:43+01:00 Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy Ríos, Asunción de los Wierzchos, Jacek Sancho, Leopoldo G. Ascaso, Carmen 2004 22195 bytes application/pdf http://hdl.handle.net/10261/19658 https://doi.org/10.1016/j.femsec.2004.06.010 en eng Elsevier http://dx.doi.org/10.1016/j.femsec.2004.06.010 FEMS Microbiology Ecology 50: 143-152(2004) 0168-6496 http://hdl.handle.net/10261/19658 doi:10.1016/j.femsec.2004.06.010 none Antarctica Cyanobacteria Fungi Endolithic biofilms EPS Lithobionts Physiological state Ultrastructure artículo http://purl.org/coar/resource_type/c_6501 2004 ftcsic https://doi.org/10.1016/j.femsec.2004.06.010 2024-01-16T09:24:52Z 10 pages, and photos, and tables statistics. In this microscopy study, we show that microorganisms comprising many endolithic communities of the McMurdo Dry Valleys of Antarctica appear in different physiological states. Live/dead microbial fluorescence stains were used to identify the state of microorganisms in the biofilms. The ultrastructures of these microorganisms were then characterized by transmission electron microscopy. Cyanobacteria were associated with heterotrophic bacterial cells, while fungal cells were free-living or formed partners with green alga as lichens. The extracellular polymeric substances, in which the endolithic microorganisms were embedded, formed an integral part of the biofilms observed. Extracellular polymeric substances probably play a significant role in nutrient interactions and protection of microorganisms from the environmental conditions outside the film. Living, moribund, dormant and dead microorganisms shared this microhabitat. The ecological impacts of the observed physiological dynamics are discussed. Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Antarctica McMurdo Dry Valleys Digital.CSIC (Spanish National Research Council) Antarctic McMurdo Dry Valleys FEMS Microbiology Ecology 50 3 143 152 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Antarctica Cyanobacteria Fungi Endolithic biofilms EPS Lithobionts Physiological state Ultrastructure |
spellingShingle |
Antarctica Cyanobacteria Fungi Endolithic biofilms EPS Lithobionts Physiological state Ultrastructure Ríos, Asunción de los Wierzchos, Jacek Sancho, Leopoldo G. Ascaso, Carmen Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
topic_facet |
Antarctica Cyanobacteria Fungi Endolithic biofilms EPS Lithobionts Physiological state Ultrastructure |
description |
10 pages, and photos, and tables statistics. In this microscopy study, we show that microorganisms comprising many endolithic communities of the McMurdo Dry Valleys of Antarctica appear in different physiological states. Live/dead microbial fluorescence stains were used to identify the state of microorganisms in the biofilms. The ultrastructures of these microorganisms were then characterized by transmission electron microscopy. Cyanobacteria were associated with heterotrophic bacterial cells, while fungal cells were free-living or formed partners with green alga as lichens. The extracellular polymeric substances, in which the endolithic microorganisms were embedded, formed an integral part of the biofilms observed. Extracellular polymeric substances probably play a significant role in nutrient interactions and protection of microorganisms from the environmental conditions outside the film. Living, moribund, dormant and dead microorganisms shared this microhabitat. The ecological impacts of the observed physiological dynamics are discussed. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Ríos, Asunción de los Wierzchos, Jacek Sancho, Leopoldo G. Ascaso, Carmen |
author_facet |
Ríos, Asunción de los Wierzchos, Jacek Sancho, Leopoldo G. Ascaso, Carmen |
author_sort |
Ríos, Asunción de los |
title |
Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
title_short |
Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
title_full |
Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
title_fullStr |
Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
title_full_unstemmed |
Exploring the physiological state of continental Antarctic endolithic microorganisms by microscopy |
title_sort |
exploring the physiological state of continental antarctic endolithic microorganisms by microscopy |
publisher |
Elsevier |
publishDate |
2004 |
url |
http://hdl.handle.net/10261/19658 https://doi.org/10.1016/j.femsec.2004.06.010 |
geographic |
Antarctic McMurdo Dry Valleys |
geographic_facet |
Antarctic McMurdo Dry Valleys |
genre |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Dry Valleys |
op_relation |
http://dx.doi.org/10.1016/j.femsec.2004.06.010 FEMS Microbiology Ecology 50: 143-152(2004) 0168-6496 http://hdl.handle.net/10261/19658 doi:10.1016/j.femsec.2004.06.010 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.femsec.2004.06.010 |
container_title |
FEMS Microbiology Ecology |
container_volume |
50 |
container_issue |
3 |
container_start_page |
143 |
op_container_end_page |
152 |
_version_ |
1790605379653074944 |