Date of Award

2016

Publisher

North Dakota State University

Document Type

Thesis

Degree Awarded

Master of Science (MS)

Program

Genomics and Bioinformatics

Department

Plant Sciences

College

Agriculture, Food Systems and Natural Resources

Faculty Advisor

Bergholz, Peter

Description

Escherichia coli is commensal bacteria and is a symbiont of the digestive system of vertebrates. Due to frequent deposition of E. coli into extrahost habitats (soil, water), approximately half of its population exists as free living organisms. It is unclear what genome-wide variation stands behind adaptation for extrahost habitat. This thesis applies a genome-wide association study approach to find genetic variation in core and accessory parts of genome of E. coli that is associated with 1) forest or agricultural field soil habitats and 2) with survival phenotype in soil microcosm. Gene composition analysis suggests that pan-genome of environmental E. coli is unlimited. Core and accessory genome contained variation associated with survival phenotype and with forest or field habitat.

Rights

NDSU policy 190.6.2

Rights Link

https://www.ndsu.edu/fileadmin/policy/190.pdf

Author ORCID Identifier

0000-0003-1961-7548

Handle Identifier

https://hdl.handle.net/10365/28022

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