Thesis
The Impacts of Domestication on Symbiosis
Washington State University
Master of Science (MS), Washington State University
07/2024
DOI:
https://doi.org/10.7273/000007106
Abstract
The enhancement of crop traits that support sustainable agriculture, such as traits enhancing the mutualism between legumes and rhizobia, is critical for continued food security while mitigating environmental costs levied by intensive agriculture. However, little is known about how anthropogenic influences have altered symbiosis. In particular, we lack a population genetic perspective on how domestication has impacted loci and traits related to symbiotic nitrogen fixation (SNF). While some existing studies show how shifts in traits and loci over the course of crop domestication have disrupted SNF, other studies find no change or even enhancement of SNF over the course of domestication. Our analysis of genetic variants across the genomes of many wild, landrace, and modern cultivar genotypes of soybean indicate that domestication has decreased the prevalence of deleterious substitutions in modern cultivars compared to their wild progenitors. Additionally, we highlight specific genes and functions impacted in different ways by domestication, which should be further examined and experimentally validated for use in continued cultivar development.
Metrics
6 File views/ downloads
24 Record Views
Details
- Title
- The Impacts of Domestication on Symbiosis
- Creators
- Zoë Lorraine Wilson
- Contributors
- Stephanie Porter (Chair)Jeremiah Busch (Committee Member)Seth Rudman (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- School of Biological Sciences
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 85
- Identifiers
- 99901152539401842
- Language
- English
- Resource Type
- Thesis