Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil
The thermophilic bacterial strain MP4 assigned to a new species, likely of the genus Alicyclobacillus, was isolated from geothermal soils on the NW slope of Mount Melbourne, Antarctica. These soils have high iron concentrations and the strain MP4 requires iron additions for growth. Four mesophilic b...
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ftunivsiena:oai:usiena-air.unisi.it:11365/6642 2024-04-14T08:04:37+00:00 Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil PEPI, M. AGNORELLI, C. BARGAGLI, R. Pepi, M. Agnorelli, C. Bargagli, R. 2005 STAMPA http://hdl.handle.net/11365/6642 https://doi.org/10.1007/s10534-005-0837-z eng eng info:eu-repo/semantics/altIdentifier/pmid/16333753 info:eu-repo/semantics/altIdentifier/wos/WOS:000233823500008 volume:18 issue:5 firstpage:529 lastpage:536 numberofpages:8 journal:BIOMETALS http://hdl.handle.net/11365/6642 doi:10.1007/s10534-005-0837-z info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-28544438070 info:eu-repo/semantics/closedAccess Continental Antarctica Geothermal soil Iron bioavailability Thermophilic bacteria info:eu-repo/semantics/article 2005 ftunivsiena https://doi.org/10.1007/s10534-005-0837-z 2024-03-21T15:53:58Z The thermophilic bacterial strain MP4 assigned to a new species, likely of the genus Alicyclobacillus, was isolated from geothermal soils on the NW slope of Mount Melbourne, Antarctica. These soils have high iron concentrations and the strain MP4 requires iron additions for growth. Four mesophilic bacterial strains Paenibacillus validus MP5, MP8, and MP10, and P. apiarius MP7, isolated from the same site, need iron supply for growth depending on the medium. Growth temperature of thermophilic strain ranges from 42 to 70 degrees C, and that one of mesophiles from 25 to 44 degrees C. Thermophilic and mesophilic strains shared microenvironments with temperature of 42-44 degrees C and showed optima of pH values ranging from 5.5 to 6.0. The thermophilic strain MP4 reached values of 10(6) CFU ml(-1) in aqueous soil extract from the NW slope of Mt. Melbourne, and 10(5) CFU ml(-1) in water extracts from other geothermal Antarctic areas ( Mt. Rittmann and Cryptogam Ridge). Growth of thermophilic bacteria in aqueous extracts of the NW slope of Mount Melbourne soils caused a reduction of 50% of soluble iron content, which was recovered in bacterial biomass. These results suggest a possible involvement of the thermophilic strain MP4 in iron bioavailability in these geothermal soils. Article in Journal/Newspaper Antarc* Antarctic Antarctica Università degli Studi di Siena: USiena air Antarctic Mount Melbourne ENVELOPE(164.700,164.700,-74.350,-74.350) Rittmann ENVELOPE(165.500,165.500,-73.450,-73.450) BioMetals 18 5 529 536 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Continental Antarctica Geothermal soil Iron bioavailability Thermophilic bacteria |
spellingShingle |
Continental Antarctica Geothermal soil Iron bioavailability Thermophilic bacteria PEPI, M. AGNORELLI, C. BARGAGLI, R. Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
topic_facet |
Continental Antarctica Geothermal soil Iron bioavailability Thermophilic bacteria |
description |
The thermophilic bacterial strain MP4 assigned to a new species, likely of the genus Alicyclobacillus, was isolated from geothermal soils on the NW slope of Mount Melbourne, Antarctica. These soils have high iron concentrations and the strain MP4 requires iron additions for growth. Four mesophilic bacterial strains Paenibacillus validus MP5, MP8, and MP10, and P. apiarius MP7, isolated from the same site, need iron supply for growth depending on the medium. Growth temperature of thermophilic strain ranges from 42 to 70 degrees C, and that one of mesophiles from 25 to 44 degrees C. Thermophilic and mesophilic strains shared microenvironments with temperature of 42-44 degrees C and showed optima of pH values ranging from 5.5 to 6.0. The thermophilic strain MP4 reached values of 10(6) CFU ml(-1) in aqueous soil extract from the NW slope of Mt. Melbourne, and 10(5) CFU ml(-1) in water extracts from other geothermal Antarctic areas ( Mt. Rittmann and Cryptogam Ridge). Growth of thermophilic bacteria in aqueous extracts of the NW slope of Mount Melbourne soils caused a reduction of 50% of soluble iron content, which was recovered in bacterial biomass. These results suggest a possible involvement of the thermophilic strain MP4 in iron bioavailability in these geothermal soils. |
author2 |
Pepi, M. Agnorelli, C. Bargagli, R. |
format |
Article in Journal/Newspaper |
author |
PEPI, M. AGNORELLI, C. BARGAGLI, R. |
author_facet |
PEPI, M. AGNORELLI, C. BARGAGLI, R. |
author_sort |
PEPI, M. |
title |
Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
title_short |
Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
title_full |
Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
title_fullStr |
Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
title_full_unstemmed |
Iron demand by thermophilic and mesophilic bacteria isolated from an Antarctic geothermal soil |
title_sort |
iron demand by thermophilic and mesophilic bacteria isolated from an antarctic geothermal soil |
publishDate |
2005 |
url |
http://hdl.handle.net/11365/6642 https://doi.org/10.1007/s10534-005-0837-z |
long_lat |
ENVELOPE(164.700,164.700,-74.350,-74.350) ENVELOPE(165.500,165.500,-73.450,-73.450) |
geographic |
Antarctic Mount Melbourne Rittmann |
geographic_facet |
Antarctic Mount Melbourne Rittmann |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/16333753 info:eu-repo/semantics/altIdentifier/wos/WOS:000233823500008 volume:18 issue:5 firstpage:529 lastpage:536 numberofpages:8 journal:BIOMETALS http://hdl.handle.net/11365/6642 doi:10.1007/s10534-005-0837-z info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-28544438070 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s10534-005-0837-z |
container_title |
BioMetals |
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18 |
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