Molecular evidence of RNA polymerase II gene reveals the origin of worldwide cultivated barley

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dc.creator Wang, Yonggang
dc.creator Ren, Xifeng
dc.creator Sun, Dongfa
dc.creator Sun, Genlou 2018-02-07T13:53:52Z 2018-02-07T13:53:52Z 2016-10-27
dc.identifier.issn 2045-2322
dc.description Publisher's Version/PDF
dc.description.abstract The origin and domestication of cultivated barley have long been under debate. A population-based resequencing and phylogenetic analysis of the single copy of RPB2 gene was used to address barley domestication, to explore genetic differentiation of barley populations on the worldwide scale, and to understand gene-pool exchanges during the spread and subsequent development of barley cultivation. Our results revealed significant genetic differentiation among three geographically distinct wild barley populations. Differences in haplotype composition among populations from different geographical regions revealed that modern cultivated barley originated from two major wild barley populations: one from the Near East Fertile Crescent and the other from the Tibetan Plateau, supporting polyphyletic origin of cultivated barley. The results of haplotype frequencies supported multiple domestications coupled with widespread introgression events that generated genetic admixture between divergent barley gene pools. Our results not only provide important insight into the domestication and evolution of cultivated barley, but also enhance our understanding of introgression and distinct selection pressures in different environments on shaping the genetic diversity of worldwide barley populations, thus further facilitating the effective use of the wild barley germplasm. en_CA
dc.language.iso en en_CA
dc.publisher Nature Publishing Group en_CA
dc.rights Creative Commons Attribution License 4.0
dc.subject.lcsh Barley -- Genetics
dc.subject.lcsh Barley -- Origin
dc.subject.lcsh Barley -- Evolution
dc.title Molecular evidence of RNA polymerase II gene reveals the origin of worldwide cultivated barley en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Scientific Reports 6, 36122. (2016) DOI: 10.1038/srep36122 en_CA

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