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Phylogenetic relationships among Elymus and related diploid genera (Triticeae: Poaceae) based on nuclear rDNA ITS sequences

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Abstract

To investigate the phylogenetic relationships among Elymus and related diploid genera, the genome donor of Elymus, and the evolutionary history of polyploid Elymus species, nuclear ribosomal internal transcribed spacer (ITS) sequences were analyzed for 10 Elymus species, together with 17 diploid taxa from 5 monogenomic genera. The phylogenetic analyses (Neighbor-Joining) supported two major clades (St and H). Sequence diversity and genealogical analysis suggested that (1) Elymus species were unambiguously closely related to Pseudoroegeria; (2) Pse. stipifolia might be serve as the St genome donor of polyploid Elymus species; (3) the Y genome might be originated from ancestral lineage of Pseudoroegneria (St); (4) the ITS sequences of Elymus were evolutionarily distinct and may clarify parental lineages and phylogenetic relationships in Elymus.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 31270243). We would like to specially thank the American National Plant Germplasm System for providing some of the seeds.

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Authors and Affiliations

  1. College of Biology and Science, Sichuan Agricultural University, Ya’an, 625014, Sichuan, China

    Gang Gao, Jia-bin Deng, Xue-mei Gou, Qian Wang, Chun-bang Ding, Li Zhang & Rui-wu Yang

  2. Triticeae Research Institute, Sichuan Agricultural University, Wenjiang, Sichuan, 611130, China

    Yong-hong Zhou

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  1. Gang Gao
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  2. Jia-bin Deng
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  3. Xue-mei Gou
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  4. Qian Wang
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  5. Chun-bang Ding
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  6. Li Zhang
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  7. Yong-hong Zhou
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Correspondence to Rui-wu Yang.

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Gao, G., Deng, Jb., Gou, Xm. et al. Phylogenetic relationships among Elymus and related diploid genera (Triticeae: Poaceae) based on nuclear rDNA ITS sequences. Biologia 70, 183–189 (2015). https://doi.org/10.1515/biolog-2015-0019

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