dc.creator |
Zuo, Hongwei |
|
dc.creator |
Wu, Panpan |
|
dc.creator |
Wu, Dexiang |
|
dc.creator |
Sun, Genlou |
|
dc.date.accessioned |
2016-11-10T20:30:42Z |
|
dc.date.available |
2016-11-10T20:30:42Z |
|
dc.date.issued |
2015-05-06 |
|
dc.identifier.issn |
1932-6203 |
|
dc.identifier.uri |
http://library2.smu.ca/handle/01/26638 |
|
dc.description |
Publisher's version/PDF |
en_CA |
dc.description.abstract |
To study origin and evolutionary dynamics of tetraploid Elymus trachycaulus that has been cytologically defined as containing StH genomes, thirteen accessions of E. trachycaulus were analyzed using two low-copy nuclear gene Pepc (phosphoenolpyruvate carboxylase) and Rpb2 (the second largest subunit of RNA polymerase II), and one chloroplast region trnL–trnF (spacer between the tRNA Leu (UAA) gene and the tRNA-Phe (GAA) gene). Our chloroplast data indicated that Pseudoroegneria (St genome) was the maternal donor of E. trachycaulus. Rpb2 data indicated that the St genome in E. trachycaulus was originated from either P. strigosa, P. stipifolia, P. spicata or P. geniculate. The Hordeum (H genome)-like sequences of E. trachycaulus are polyphyletic in the Pepc tree, suggesting that the H genome in E. trachycaulus was contributed by multiple sources, whether due to multiple origins or introgression resulting from subsequent hybridization. Failure to recovering St copy of Pepc sequence in most accessions of E. trachycaulus might be caused by genome convergent evolution in allopolyploids. Multiple copies of H-like Pepc sequence from each accession with relative large deletions and insertions might be caused by either instability of Pepc sequence in H- genome or incomplete concerted evolution. Our results highlighted complex evolutionary history of E. trachycaulus. |
en_CA |
dc.description.provenance |
Submitted by John Yolkowski (john.yolkowski@smu.ca) on 2016-11-10T20:30:42Z
No. of bitstreams: 1
journal.pone.0125417.PDF: 2179860 bytes, checksum: 53bef205ef8848a46e7928da9ac81aa4 (MD5) |
en |
dc.description.provenance |
Made available in DSpace on 2016-11-10T20:30:42Z (GMT). No. of bitstreams: 1
journal.pone.0125417.PDF: 2179860 bytes, checksum: 53bef205ef8848a46e7928da9ac81aa4 (MD5)
Previous issue date: 2015-05-06 |
en |
dc.description.sponsorship |
This project was supported in part by an internal grant from Anhui Agricultural University, a discovery grant (RGPIN-2014-05249) from the Natural Sciences and Engineering Research Council of Canada, and a Senate Research Grant at Saint Mary’s University, Canada. The funders had no role
in study design, data collection and analysis, decision to publish, or preparation of the manuscript. |
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dc.language.iso |
en |
en_CA |
dc.publisher |
Public Library of Science |
en_CA |
dc.relation.uri |
http://dx.doi.org/10.1371/journal.pone.0125417 |
|
dc.rights |
Copyright: 2015 Zuo et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
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dc.subject.lcsh |
Wheatgrasses |
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dc.subject.lcsh |
Elymus |
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dc.subject.lcsh |
Evolution (Biology) |
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dc.title |
Origin and Reticulate Evolutionary Process of Wheatgrass Elymus trachycaulus (Triticeae: Poaceae) |
en_CA |
dc.type |
Text |
en_CA |
dcterms.bibliographicCitation |
PLoS ONE 10(5), e0125417. (2015) |
en_CA |
Copyright statement:
Copyright: 2015 Zuo et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.