Investigation of the putative iron reducing capabilities of Lokiarchaeota
Marine subsurface sediments are large and ecologically significant microbial habitats. The archaeal phylum Lokiarchaeota is a group of organisms commonly found in these sediments. Their metabolism is unknown, but based on several indirect lines of evidence, it has been suggested that they are dissim...
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The University of Bergen
2015
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ftunivbergen:oai:bora.uib.no:1956/10519 2023-05-15T15:06:38+02:00 Investigation of the putative iron reducing capabilities of Lokiarchaeota Lydvo, Steffen 2015-06-01 5182331 bytes application/pdf http://hdl.handle.net/1956/10519 eng eng The University of Bergen http://hdl.handle.net/1956/10519 Copyright the Author. All rights reserved marine sedimenter lokiarchaeota iron reduction marine sediments jernreduksjon http://data.ub.uio.no/realfagstermer/c012415 751999 Master thesis 2015 ftunivbergen 2023-03-14T17:40:55Z Marine subsurface sediments are large and ecologically significant microbial habitats. The archaeal phylum Lokiarchaeota is a group of organisms commonly found in these sediments. Their metabolism is unknown, but based on several indirect lines of evidence, it has been suggested that they are dissimilatory iron and/or manganese reducers, oxidising organic carbon using ferric iron [Fe(III)] and manganese [Mn(IV)] as electron acceptors. This study aims to further investigate these claims using a two-pronged approach: Firstly, to attempt to enrich Lokiarchaeota in vitro, and monitor the growth using molecular methods; secondly, to correlate Lokiarchaeota abundance data from quantitative polymerase chain reaction (qPCR) with data on iron and manganese concentration in the porewater of a long sediment core from the Arctic Mid-Ocean Ridge. The results of the study are largely inconclusive, but some evidence that support the hypothesis was found. 16S rRNA gene community profiles suggest that Lokiarchaeota might have grown in one of the enrichments containing amorphous Fe(III)-oxide and pyruvate, and a possible correlation between dissolved Fe(II) and Lokiarchaeota abundance was found in the sediment core. Master i Biologi MAMN-BIO BIO399 Master Thesis Arctic University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
marine sedimenter lokiarchaeota iron reduction marine sediments jernreduksjon http://data.ub.uio.no/realfagstermer/c012415 751999 |
spellingShingle |
marine sedimenter lokiarchaeota iron reduction marine sediments jernreduksjon http://data.ub.uio.no/realfagstermer/c012415 751999 Lydvo, Steffen Investigation of the putative iron reducing capabilities of Lokiarchaeota |
topic_facet |
marine sedimenter lokiarchaeota iron reduction marine sediments jernreduksjon http://data.ub.uio.no/realfagstermer/c012415 751999 |
description |
Marine subsurface sediments are large and ecologically significant microbial habitats. The archaeal phylum Lokiarchaeota is a group of organisms commonly found in these sediments. Their metabolism is unknown, but based on several indirect lines of evidence, it has been suggested that they are dissimilatory iron and/or manganese reducers, oxidising organic carbon using ferric iron [Fe(III)] and manganese [Mn(IV)] as electron acceptors. This study aims to further investigate these claims using a two-pronged approach: Firstly, to attempt to enrich Lokiarchaeota in vitro, and monitor the growth using molecular methods; secondly, to correlate Lokiarchaeota abundance data from quantitative polymerase chain reaction (qPCR) with data on iron and manganese concentration in the porewater of a long sediment core from the Arctic Mid-Ocean Ridge. The results of the study are largely inconclusive, but some evidence that support the hypothesis was found. 16S rRNA gene community profiles suggest that Lokiarchaeota might have grown in one of the enrichments containing amorphous Fe(III)-oxide and pyruvate, and a possible correlation between dissolved Fe(II) and Lokiarchaeota abundance was found in the sediment core. Master i Biologi MAMN-BIO BIO399 |
format |
Master Thesis |
author |
Lydvo, Steffen |
author_facet |
Lydvo, Steffen |
author_sort |
Lydvo, Steffen |
title |
Investigation of the putative iron reducing capabilities of Lokiarchaeota |
title_short |
Investigation of the putative iron reducing capabilities of Lokiarchaeota |
title_full |
Investigation of the putative iron reducing capabilities of Lokiarchaeota |
title_fullStr |
Investigation of the putative iron reducing capabilities of Lokiarchaeota |
title_full_unstemmed |
Investigation of the putative iron reducing capabilities of Lokiarchaeota |
title_sort |
investigation of the putative iron reducing capabilities of lokiarchaeota |
publisher |
The University of Bergen |
publishDate |
2015 |
url |
http://hdl.handle.net/1956/10519 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
http://hdl.handle.net/1956/10519 |
op_rights |
Copyright the Author. All rights reserved |
_version_ |
1766338199393665024 |