Genetic differentiation between two species of buckwheat (Eriogonum)
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.
see Readme file
Utah State University
US Dept. of Interior, US Fish and Wildlife
US Dept. of Interior, US Fish and Wildlife F17AP00091
Determine if Eriogonum soredium is a genetically distinct species from E. shockleyi
See manuscript (currently under review)
Eriogonum soredium, Eriogonum shockleyi
Biodiversity | Bioinformatics | Evolution | Genetics and Genomics | Life Sciences | Other Ecology and Evolutionary Biology
This work is licensed under a Creative Commons Attribution 4.0 License.
Wolf, Paul G. and Lemon, Jenessa B., "Genetic differentiation between two species of buckwheat (Eriogonum)" (2018). Browse all Datasets. Paper 41.
FilesREADME_erisor.txt (2 kB)
erisor_code.zip (276 kB)
shockleyi_fastq_aa.zip (731288 kB)
shockleyi_fastq_ab.zip (557613 kB)
shockleyi_fastq_ac.zip (283143 kB)
shockleyi_fastq_ad.zip (202501 kB)
soredium_fastqs_aa.zip (546415 kB)
soredium_fastqs_ab.zip (415071 kB)
soredium_fastqs_ac.zip (592809 kB)
soredium_fastqs_ad.zip (645461 kB)