Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica
Novel strains of obligately chemolithoautotrophic, sulfur-oxidizing bacteria have been isolated from various depths of Lake Fryxell, Antarctica. Physiological, morphological, and phylogenetic analyses showed these strains to be related to mesophilic Thiobacillus species, such as T. thioparus. Howeve...
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2006
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538749 http://www.ncbi.nlm.nih.gov/pubmed/16885310 https://doi.org/10.1128/AEM.00702-06 |
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ftpubmed:oai:pubmedcentral.nih.gov:1538749 2023-05-15T13:46:10+02:00 Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica Sattley, W. Matthew Madigan, Michael T. 2006-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538749 http://www.ncbi.nlm.nih.gov/pubmed/16885310 https://doi.org/10.1128/AEM.00702-06 en eng American Society for Microbiology http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538749 http://www.ncbi.nlm.nih.gov/pubmed/16885310 http://dx.doi.org/10.1128/AEM.00702-06 Copyright © 2006, American Society for Microbiology Microbial Ecology Text 2006 ftpubmed https://doi.org/10.1128/AEM.00702-06 2013-08-31T05:17:01Z Novel strains of obligately chemolithoautotrophic, sulfur-oxidizing bacteria have been isolated from various depths of Lake Fryxell, Antarctica. Physiological, morphological, and phylogenetic analyses showed these strains to be related to mesophilic Thiobacillus species, such as T. thioparus. However, the psychrotolerant Antarctic isolates showed an adaptation to cold temperatures and thus should be active in the nearly freezing waters of the lake. Enumeration by most-probable-number analysis in an oxic, thiosulfate-containing medium revealed that the sulfur-oxidizing chemolithotroph population peaks precisely at the oxycline (9.5 m), although viable cells exist well into the anoxic, sulfidic waters of the lake. The sulfur-oxidizing bacteria described here likely play a key role in the biogeochemical cycling of carbon and sulfur in Lake Fryxell. Text Antarc* Antarctic Antarctica PubMed Central (PMC) Antarctic Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Lake Fryxell ENVELOPE(163.183,163.183,-77.617,-77.617) Applied and Environmental Microbiology 72 8 5562 5568 |
institution |
Open Polar |
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PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Microbial Ecology |
spellingShingle |
Microbial Ecology Sattley, W. Matthew Madigan, Michael T. Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
topic_facet |
Microbial Ecology |
description |
Novel strains of obligately chemolithoautotrophic, sulfur-oxidizing bacteria have been isolated from various depths of Lake Fryxell, Antarctica. Physiological, morphological, and phylogenetic analyses showed these strains to be related to mesophilic Thiobacillus species, such as T. thioparus. However, the psychrotolerant Antarctic isolates showed an adaptation to cold temperatures and thus should be active in the nearly freezing waters of the lake. Enumeration by most-probable-number analysis in an oxic, thiosulfate-containing medium revealed that the sulfur-oxidizing chemolithotroph population peaks precisely at the oxycline (9.5 m), although viable cells exist well into the anoxic, sulfidic waters of the lake. The sulfur-oxidizing bacteria described here likely play a key role in the biogeochemical cycling of carbon and sulfur in Lake Fryxell. |
format |
Text |
author |
Sattley, W. Matthew Madigan, Michael T. |
author_facet |
Sattley, W. Matthew Madigan, Michael T. |
author_sort |
Sattley, W. Matthew |
title |
Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
title_short |
Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
title_full |
Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
title_fullStr |
Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
title_full_unstemmed |
Isolation, Characterization, and Ecology of Cold-Active, Chemolithotrophic, Sulfur-Oxidizing Bacteria from Perennially Ice-Covered Lake Fryxell, Antarctica |
title_sort |
isolation, characterization, and ecology of cold-active, chemolithotrophic, sulfur-oxidizing bacteria from perennially ice-covered lake fryxell, antarctica |
publisher |
American Society for Microbiology |
publishDate |
2006 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538749 http://www.ncbi.nlm.nih.gov/pubmed/16885310 https://doi.org/10.1128/AEM.00702-06 |
long_lat |
ENVELOPE(163.183,163.183,-77.617,-77.617) ENVELOPE(163.183,163.183,-77.617,-77.617) |
geographic |
Antarctic Fryxell Lake Fryxell |
geographic_facet |
Antarctic Fryxell Lake Fryxell |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1538749 http://www.ncbi.nlm.nih.gov/pubmed/16885310 http://dx.doi.org/10.1128/AEM.00702-06 |
op_rights |
Copyright © 2006, American Society for Microbiology |
op_doi |
https://doi.org/10.1128/AEM.00702-06 |
container_title |
Applied and Environmental Microbiology |
container_volume |
72 |
container_issue |
8 |
container_start_page |
5562 |
op_container_end_page |
5568 |
_version_ |
1766238028470157312 |