Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic
Cobalamin has the potential to limit primary productivity and shape the structure and ecological interactions of marine microbial communities. The identification of major sources and sinks of this vitamin is needed in order to understand its availability in the ocean. In this thesis, assembly-based...
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ftdalhouse:oai:DalSpace.library.dal.ca:10222/80338 2023-05-15T17:45:23+02:00 Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic Soto Rojas, Maria Alejandra Department of Biology Master of Science Amanda Cockshutt Sophia Stone Chris Algar Julie LaRoche Erin M. Bertrand Not Applicable 2021-04-07T11:45:40Z http://hdl.handle.net/10222/80338 en eng http://hdl.handle.net/10222/80338 metagenomics Scotian Shelf cobalamin cycle proteomics Thesis 2021 ftdalhouse 2022-03-06T00:11:06Z Cobalamin has the potential to limit primary productivity and shape the structure and ecological interactions of marine microbial communities. The identification of major sources and sinks of this vitamin is needed in order to understand its availability in the ocean. In this thesis, assembly-based and short-read-based approaches were combined to analyze metagenomic samples from the Scotian Shelf and Slope region of the Northwest Atlantic. This resulted in the first identification of major producers, remodelers and consumers of cobalamin and related compounds in this region. Mass-spectrometry tools to monitor the contribution of Synechococcus, an important cyanobacterial group, to the cobalamin cycle in the Northwest Atlantic were also identified. The implementation of these tools in culture experiments enabled the identification of environmental and physiological factors with potential to affect cyanobacterial contributions to cobalamin cycling in this region. In sum, this thesis is a step towards elucidating the influence that cobalamin may have on marine primary productivity and microbial ecological interactions in the Northwest Atlantic. Thesis Northwest Atlantic Dalhousie University: DalSpace Institutional Repository |
institution |
Open Polar |
collection |
Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
English |
topic |
metagenomics Scotian Shelf cobalamin cycle proteomics |
spellingShingle |
metagenomics Scotian Shelf cobalamin cycle proteomics Soto Rojas, Maria Alejandra Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
topic_facet |
metagenomics Scotian Shelf cobalamin cycle proteomics |
description |
Cobalamin has the potential to limit primary productivity and shape the structure and ecological interactions of marine microbial communities. The identification of major sources and sinks of this vitamin is needed in order to understand its availability in the ocean. In this thesis, assembly-based and short-read-based approaches were combined to analyze metagenomic samples from the Scotian Shelf and Slope region of the Northwest Atlantic. This resulted in the first identification of major producers, remodelers and consumers of cobalamin and related compounds in this region. Mass-spectrometry tools to monitor the contribution of Synechococcus, an important cyanobacterial group, to the cobalamin cycle in the Northwest Atlantic were also identified. The implementation of these tools in culture experiments enabled the identification of environmental and physiological factors with potential to affect cyanobacterial contributions to cobalamin cycling in this region. In sum, this thesis is a step towards elucidating the influence that cobalamin may have on marine primary productivity and microbial ecological interactions in the Northwest Atlantic. |
author2 |
Department of Biology Master of Science Amanda Cockshutt Sophia Stone Chris Algar Julie LaRoche Erin M. Bertrand Not Applicable |
format |
Thesis |
author |
Soto Rojas, Maria Alejandra |
author_facet |
Soto Rojas, Maria Alejandra |
author_sort |
Soto Rojas, Maria Alejandra |
title |
Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
title_short |
Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
title_full |
Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
title_fullStr |
Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
title_full_unstemmed |
Towards understanding the prokaryotic contributions to cobalamin cycling in the Northwest Atlantic |
title_sort |
towards understanding the prokaryotic contributions to cobalamin cycling in the northwest atlantic |
publishDate |
2021 |
url |
http://hdl.handle.net/10222/80338 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
http://hdl.handle.net/10222/80338 |
_version_ |
1766148328174649344 |