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Evaluation of genetic diversity and construction of DNA fingerprinting in Polygonatum Mill. based on EST-SSR and SRAP molecular markers

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Abstract

Polygonatum sibiricum is widely consumed as a traditional Chinese herb and edible plant in China. Despite its nutritional and medical values, research on Polygonatum Mill. has been scarce, particularly as far as its genetic diversity is concerned. In this study, fourteen expressed sequence tag-derived simple sequence repeat (EST-SSR) and seven sequence-related amplified polymorphism (SRAP) markers were used to evaluate the genetic diversity in fifty Polygonatum Mill. accessions. The EST-SSRs and SRAPs produced 173 (90.58%) and 113 (93.39%) polymorphic bands, respectively. Unweighted Pair-Group Method Analysis (UPGMA) based on the combined data matrices of EST-SSRs and SRAPs divided the fifty Polygonatum Mill. accessions into fourteen groups. In addition, accessions of P. cyrtonema Hua obtained from Anhui and Zhejiang provinces were clustered according to their geographic origin. Furthermore, some accessions were gathered together based on species, such as P. kingianum Coll. et Hemsl, P. punctatum Royle ex Kunth, P. odoratum (Mill.) Druce, and P. sibiricum Red., and bootstrap analysis for clustering fully supported the grou** of the accessions. The Analysis of Molecular Variance (AMOVA) results revealed higher variation within populations (95%) rather than among populations (5%), indicating that Polygonatum Mill. has a low genetic differentiation between populations, and Principal Coordinate Analysis (PCoA) greatly supported the results of cluster analysis and AMOVA analysis. Finally, five markers which could produce abundant and stable bands were used to construct DNA fingerprinting database of Polygonatum Mill.. Our results demonstrated the utility of both EST-SSR and SRAP markers to successfully evaluate and identify Polygonatum Mill..

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Acknowledgements

This work was financially supported by Key Research and Development Project of Zhejiang Province (2016BSA780588) and the Fundamental Research Funds of Zhejiang Sci-Tech University (2019Q045).

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QJ and ZL designed the experiments. TF, XC and WC were involved in collection of plant samples. TF and FW executed the laboratory experiments. TF and XM conducted data analysis. TF, QJ and ZL wrote the draft paper. All authors have read, edited and approved the current version of the manuscript.

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Correspondence to Qiaojun Jia or Zongsuo Liang.

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The authors declare that they have no conflict of interest in the publication.

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Feng, T., Jia, Q., Meng, X. et al. Evaluation of genetic diversity and construction of DNA fingerprinting in Polygonatum Mill. based on EST-SSR and SRAP molecular markers. 3 Biotech 10, 322 (2020). https://doi.org/10.1007/s13205-020-02316-z

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  • DOI: https://doi.org/10.1007/s13205-020-02316-z

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