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SCAR marker for identification and discrimination of specific medicinal Lycium chinense Miller from Lycium species from ramp-PCR RAPD fragments

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Abstract

In the current study, ramp-PCR fragments from improved RAPD (random amplified polymorphic DNA) amplification of Lycium (Goji) species or cultivars were cut and cloned into the vector of pGEM-T. A positive clone 10–5 was screened by PCR amplification, enzymatic digestion, and Sanger sequencing. A SCAR (sequence-characterized amplified region) marker, named Goji 10–5, with 949 nucleotides in length, was identified. Goji 10–5 is specific to Goji species Lycium chinense Miller from Jiangxi in China and Texas in the USA. A BLAST search of this nucleotide sequence in the GenBank database indicated that it shows no identity with any other species, including no any other Lycium species. As a new sequence, we have deposited it in the GenBank database with accession No. MN862323. PCR assays were developed and converted the nucleotide sequence to become a novel molecular marker for Lycium chinense Miller, named Goji 10–5. This marker may be used for the genetic identification of other samples. This study has successfully developed Goji 10–5, a specific SCAR marker to identify L. chinense and distinguish it from other species, including other Lycium species from different locations.

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Acknowledgements

This research was supported in part by the Science and Technology Innovation Team of Colleges and Universities in Sichuan Province (13TD0032), and the Joint Research Foundation of Luzhou City and Southwest Medical University (2018LZXNYD-YL01). We truly thank people for help in collecting samples.

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Contributions

JF and JP were in charge of the idea, project design. XL, JC, and CW performed DNA extraction, PCR amplification, sequencing and data analysis. ZM and XL collected N. sibirica Pall. sample and performed DNA extraction. JF wrote the manuscript, MK edited the manuscript draft and JF revised the manuscript.

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Correspondence to Junjiang Fu.

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The authors declare that there is no conflict of interest regarding the publication of this paper.

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Liu, X., Cheng, J., Mei, Z. et al. SCAR marker for identification and discrimination of specific medicinal Lycium chinense Miller from Lycium species from ramp-PCR RAPD fragments. 3 Biotech 10, 334 (2020). https://doi.org/10.1007/s13205-020-02325-y

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  • DOI: https://doi.org/10.1007/s13205-020-02325-y

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