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Characterization and Manipulation of...

Trentacoste, Emily Margaret.

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Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae./
作者:	Trentacoste, Emily Margaret.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2014,
面頁冊數:	217 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.
Contained By:	Dissertation Abstracts International75-07B(E).
標題:	Molecular biology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3615254
ISBN:	9781303811463

Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae.
Trentacoste, Emily Margaret.

Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae. - Ann Arbor : ProQuest Dissertations & Theses, 2014 - 217 p.

Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.

Thesis (Ph.D.)--University of California, San Diego, 2014.

The search for new sources of sustainable and renewable energy is one of the most important issues of our time. Broadening our energy base not only thwarts the issues of dependence on foreign oil and national energy security, but also creates a more stable and sustainable energy sector. Biomass is one such source of renewable energy that has been recently developed over the last few decades, and microalgae were identified half a century ago as potential producers of fuel-relevant molecules. Members of this group can produce a variety of molecules including lipids that can be converted into liquid fuel molecules, carbohydrates that can be fermented into ethanol, and biohydrogen. This dissertation work focuses in particular on the pathways associated with lipid production in microalgae.

ISBN: 9781303811463Subjects--Topical Terms:

517296
Molecular biology.

Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae.
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245 1 0 $a Characterization and Manipulation of Lipid Catabolism in Eukaryotic Microalgae.
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500 $a Source: Dissertation Abstracts International, Volume: 75-07(E), Section: B.
500 $a Advisers: William Gerwick; Mark Hildebrand.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2014.
520 $a The search for new sources of sustainable and renewable energy is one of the most important issues of our time. Broadening our energy base not only thwarts the issues of dependence on foreign oil and national energy security, but also creates a more stable and sustainable energy sector. Biomass is one such source of renewable energy that has been recently developed over the last few decades, and microalgae were identified half a century ago as potential producers of fuel-relevant molecules. Members of this group can produce a variety of molecules including lipids that can be converted into liquid fuel molecules, carbohydrates that can be fermented into ethanol, and biohydrogen. This dissertation work focuses in particular on the pathways associated with lipid production in microalgae.
520 $a This work shows that it is possible to increase lipid accumulation in microalgae through metabolic engineering without affecting growth. The pathway manipulated here is lipid catabolism, or the breakdown of lipids. This work used transcriptomics to guide the identification of a target lipase in the lipid catabolism pathway. Knock-down of this enzyme in the diatom Thalassiosira pseudonana generated strains that grew comparably to wild-type but exhibited increased TAG accumulation during exponential growth, stationary phase and nutrient starvation-induced lipid accumulation.
520 $a This dissertation also describes a novel approach for using native sequences to conduct metabolic engineering. By using the knock-down phenotypes of increased TAG accumulation and increased membrane intactness, we were able to generate and select knock-down strains using only native sequences of T. pseudonana , thus exempting these strains from the classification of "genetically modified organism" in the U.S.
520 $a Finally, this dissertation looks beyond the science of algal biofuels to investigate and analyze the policy landscape for cultivating algal biomass. The large-scale cultivation of algae is in essence agriculture, and it is imperative that federal agricultural programs are expanded to cover and support algae as equal commodities. Overall this dissertation expands our knowledge of lipid metabolism in microalgae, provides methods for increasing lipid yields in production systems, and explores the support that is available and needed to transform research and development efforts into a commercially relevant industry.
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