A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms
Iron and light are two important abiotic factors that influence diatom growth and distribution in the Southern Ocean (SO). Through a combination of physiological and transcriptomic approaches, I have explored the molecular underpinnings of nine SO diatoms that allow for adaptation and/or acclimation...
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University of North Carolina at Chapel Hill Graduate School
2015
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ftcarolinadr:cdr.lib.unc.edu:7p88ch78f 2023-10-09T21:46:41+02:00 A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms Moreno, Carly College of Arts and Sciences, Department of Marine Sciences MacGregor, Barbara Cassar, Nicolas Marchetti, Adrian 2015-12 https://doi.org/10.17615/kgar-fs08 https://cdr.lib.unc.edu/downloads/kd17cv03c?file=thumbnail https://cdr.lib.unc.edu/downloads/kd17cv03c English eng University of North Carolina at Chapel Hill Graduate School https://doi.org/10.17615/kgar-fs08 https://cdr.lib.unc.edu/downloads/kd17cv03c?file=thumbnail https://cdr.lib.unc.edu/downloads/kd17cv03c http://rightsstatements.org/vocab/InC/1.0/ Marine biology Bioinformatics Molecular biology Polar diatoms Molecular physiology Western Antarctic Peninsula Ecology Biological oceanography Masters Thesis 2015 ftcarolinadr https://doi.org/10.17615/kgar-fs08 2023-09-09T22:28:41Z Iron and light are two important abiotic factors that influence diatom growth and distribution in the Southern Ocean (SO). Through a combination of physiological and transcriptomic approaches, I have explored the molecular underpinnings of nine SO diatoms that allow for adaptation and/or acclimation to low iron and light conditions. SO diatoms used in this study ranged across five orders of magnitude in size and displayed various degrees of resistance to iron and light limitation. Specifically, we investigated the presence or absence of 22 key genes involved in iron acquisition and homeostasis, photosynthesis, and nitrogen assimilation. SO diatoms have a variety of unique resource utilization strategies coupled with gene repertoires that allow them to take advantage of ecological niches or play important roles in phytoplankton blooms. Certain diatom genes, such as B12-independent methionine synthase (MetE) and flavodoxin, were found to exhibit biogeographical patterns in distribution that favor high-nutrient, low-chlorophyll regions. Master of Science Master Thesis Antarc* Antarctic Antarctic Peninsula Southern Ocean Carolina Digital Repository (UNC - University of North Carolina) Antarctic Antarctic Peninsula Southern Ocean |
institution |
Open Polar |
collection |
Carolina Digital Repository (UNC - University of North Carolina) |
op_collection_id |
ftcarolinadr |
language |
English |
topic |
Marine biology Bioinformatics Molecular biology Polar diatoms Molecular physiology Western Antarctic Peninsula Ecology Biological oceanography |
spellingShingle |
Marine biology Bioinformatics Molecular biology Polar diatoms Molecular physiology Western Antarctic Peninsula Ecology Biological oceanography Moreno, Carly A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
topic_facet |
Marine biology Bioinformatics Molecular biology Polar diatoms Molecular physiology Western Antarctic Peninsula Ecology Biological oceanography |
description |
Iron and light are two important abiotic factors that influence diatom growth and distribution in the Southern Ocean (SO). Through a combination of physiological and transcriptomic approaches, I have explored the molecular underpinnings of nine SO diatoms that allow for adaptation and/or acclimation to low iron and light conditions. SO diatoms used in this study ranged across five orders of magnitude in size and displayed various degrees of resistance to iron and light limitation. Specifically, we investigated the presence or absence of 22 key genes involved in iron acquisition and homeostasis, photosynthesis, and nitrogen assimilation. SO diatoms have a variety of unique resource utilization strategies coupled with gene repertoires that allow them to take advantage of ecological niches or play important roles in phytoplankton blooms. Certain diatom genes, such as B12-independent methionine synthase (MetE) and flavodoxin, were found to exhibit biogeographical patterns in distribution that favor high-nutrient, low-chlorophyll regions. Master of Science |
author2 |
College of Arts and Sciences, Department of Marine Sciences MacGregor, Barbara Cassar, Nicolas Marchetti, Adrian |
format |
Master Thesis |
author |
Moreno, Carly |
author_facet |
Moreno, Carly |
author_sort |
Moreno, Carly |
title |
A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
title_short |
A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
title_full |
A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
title_fullStr |
A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
title_full_unstemmed |
A Transcriptomic Comparison of Physiological Responses to Iron and Light in Southern Ocean Diatoms |
title_sort |
transcriptomic comparison of physiological responses to iron and light in southern ocean diatoms |
publisher |
University of North Carolina at Chapel Hill Graduate School |
publishDate |
2015 |
url |
https://doi.org/10.17615/kgar-fs08 https://cdr.lib.unc.edu/downloads/kd17cv03c?file=thumbnail https://cdr.lib.unc.edu/downloads/kd17cv03c |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_relation |
https://doi.org/10.17615/kgar-fs08 https://cdr.lib.unc.edu/downloads/kd17cv03c?file=thumbnail https://cdr.lib.unc.edu/downloads/kd17cv03c |
op_rights |
http://rightsstatements.org/vocab/InC/1.0/ |
op_doi |
https://doi.org/10.17615/kgar-fs08 |
_version_ |
1779309193119924224 |