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The evolutionary history and phylogeographic pattern of Hippuris vulgaris: hybridization and long-distance dispersal from China

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Abstract

Hippuris vulgaris is a widespread aquatic plant in the Northern Hemisphere. Phylogenetic analysis on a low-copy nuclear gene (PHYB) indicated that this species originated from a hybridization between two unknown ancestral parents. Two distinct lineages (I and II) were detected using chloroplast intergenic regions, and their divergence time was 1.51 Ma. Lineage I was composed of the populations from North China, Qinghai-Tibetan Plateau (QTP), and Europe while lineage II included the populations from North China, Europe and Japan. Based on the results of the Bayesian binary MCMC (BBM) analysis, QTP was likely the original center of these two lineages. The possible dispersal route for lineage I was inferred to be directly from QTP to North China and Europe, respectively, while lineage II likely dispersed first to Japan and from there moved separately to North China and Europe. In this study, we illustrate two important evolutionary events of H. vulgaris: hybridization and long-distance dispersals.

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Acknowledgements

We are grateful to Dr. Wolfram Lobin from Botanic Gardens University of Bonn, Marja Koistinen (Senior Museum Technician) from Botanical Museum of Finnish Museum of Natural History—LUOMUS, prof. Hans Henrik Bruun from University of Copenhagen, and Pin Guo for providing the materials from foreign countries. We thank our colleagues Tianfeng Lv, Yuqian Hunag, Fei Hao, Chunlin Fu, Fengqing Tian, Shengnan Wang, and Mingfang Du for assistance with the field collections and experiments.

Funding

This research was supported by National Natural Science Foundation of China (31170203).

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Contributions

XKD performed part of the analysis, made the Figures, uploaded the sequences into NCBI, and made a major contribution to writing the manuscript. XL analyzed part of the results and contributed to writing the manuscript. XYS was responsible for the most of the experiments. XL conceived the study and revised the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Xing Liu.

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The authors declare that they have no conflict of interest.

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Handling editor: Ying-Xiong Qiu.

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Information on Electronic Supplementary Material

Online Resource 1. GenBank accession numbers of the trnT-psbD sequences.

Online Resource 2. GenBank accession numbers of the atpI-H sequences.

Online Resource 3. GenBank accession numbers of the PHYB sequences.

Online Resource 4. Phylogenic tree of Hippuris vulgaris based on the nuclear DNA region, PHYB, employing 241 sequences.

Online Resource 5. The alignment of the chloroplast sequences (trnT-psbD and atpI-H).

Online Resource 6. The alignment of the 241 PHYB sequences.

Online Resource 7. The alignment of the PHYB, from 50 individuals in 49 populations.

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Dai, X., Li, X., Song, X. et al. The evolutionary history and phylogeographic pattern of Hippuris vulgaris: hybridization and long-distance dispersal from China. Plant Syst Evol 307, 10 (2021). https://doi.org/10.1007/s00606-020-01739-8

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  • DOI: https://doi.org/10.1007/s00606-020-01739-8

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