Doctoral Dissertations
Date of Award
5-2017
Degree Type
Dissertation
Degree Name
Doctor of Philosophy
Major
Environmental Engineering
Major Professor
Terry C. Hazen
Committee Members
Chris Cox, Qiang He, Nicole Labbe
Abstract
The overarching theme of my dissertation is to study the role of bacteria in lignocellulose degradation. In recent years, more research has investigated the biodegradability of lignocellulose for biofuel production. The components of the lignocellulosic plant cell wall are considered intrinsically recalcitrant due to their structure. However, we hypothesize that these components are not intrinsically recalcitrant but their biodegradation is contingent on the environmental conditions, particularly the bacterial diversity. We believe bacteria will become especially important in lignocellulose degradation in conditions that are unfavorable for white-rot fungi. Therefore, we investigated the potential for lignin degradation by bacteria in the ocean where fungi would likely be rare. This knowledge would gather insight into allochthonous terrestrial organic carbon cycling in the ocean, a basic science knowledge gap in the complex ocean carbon cycle. Also, our investigation into the microbial ecology of marine lignocellulolytic bacteria may find new hosts of stress-tolerant commercial enzymes for biofuels and lignin valorization.
Recommended Citation
Woo, Hannah Laing Yee, "The microbial ecology of bacterial lignocellulosic degradation in the ocean. " PhD diss., University of Tennessee, 2017.
https://trace.tennessee.edu/utk_graddiss/4438