Genetic differentiation between two species of buckwheat (Eriogonum)

Creators

Paul G. Wolf, Utah State UniversityFollow
Jenessa B. Lemon, Utah State University

Description

Discovering the extent of genetic differentiation between closely related taxa facilitates decisions regarding species protection under the Endangered Species Act. Here, we analyze genotype data to explore the relatedness of two buckwheat species: Eriogonum soredium Reveal- a narrow endemic under consideration for protection, and a widespread close relative, Eriogonum shockleyi S. Watson. Eriogonum soredium grows only on Ordovician limestone outcroppings in west central Utah, whereas the range of E. shockleyi is broad, spanning the western United States from Colorado to California, and Idaho to Arizona. Eriogonum shockleyi is suspected of hybridizing with other buckwheats throughout this range. We detected higher levels of genetic diversity in E. shockleyi than in E. soredium, supporting the hypothesis that E. soredium is a derivative of E. shockleyi. We found moderate levels of admixture between the two taxa, implying the presence of incomplete reproductive barriers. Analysis of population structure revealed a genetic distinction between the two species. We found that genetic distance between samples is influenced more by taxon designation than geographic distance. Genetic evidence supports continued treatment of E. soredium as a distinct evolutionary entity.

Author ORCID Identifier

Paul G Wolf https://orcid.org/ 0000-0002-4317-6976

OCLC

1078404067

Document Type

Dataset

DCMI Type

Dataset

File Format

.fastq, .py, .txt

Viewing Instructions

see Readme file

Publication Date

3-5-2018

Funder

US Dept. of Interior, US Fish and Wildlife

Publisher

Utah State University

Award Number

US Dept. of Interior, US Fish and Wildlife F17AP00091

Award Title

Determine if Eriogonum soredium is a genetically distinct species from E. shockleyi

Methodology

See manuscript (currently under review)

Scientfic Names

Eriogonum soredium, Eriogonum shockleyi

Language

eng

Code Lists

see manuscript

Disciplines

Biodiversity | Bioinformatics | Evolution | Genetics and Genomics | Life Sciences | Other Ecology and Evolutionary Biology

License

This work is licensed under a Creative Commons Attribution 4.0 License.

Recommended Citation

Wolf, P. G., & Lemon, J. B. (2018). Genetic differentiation between two species of buckwheat (Eriogonum). Utah State University. https://doi.org/10.15142/T3K63T

Checksum

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