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Hereditas(Beijing) ›› 2022, Vol. 44 ›› Issue (4): 313-321.doi: 10.16288/j.yczz.21-415

• Review • Previous Articles     Next Articles

Progress on methods for acquiring flanking genomic sequence

Jiming Xu(), Jianshu Zhu, Mengzhen Li, Han Hu, Chuanzao Mao()   

  1. Institute of Plant Biology, College of Life Science, Zhejiang University, Hangzhou 310058, China
  • Received:2021-12-02 Revised:2022-03-08 Online:2022-04-20 Published:2022-03-25
  • Contact: Mao Chuanzao E-mail:xujiming@zju.edu.cn;mcz@zju.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China No(32002121)

Abstract:

Flanking genomic sequences refer to the DNA sequences flanking specific sites of known sequences in chromosome, which contain information such as candidate genes, transcriptional regulation, chromosome structure, and biosafety, and play an important role in genomics research. Flanking sequence acquisition technologies are mainly used in the cloning of regulatory sequences such as promoters and enhancers, identification of T-DNA or transposon insertion sites, chromosome walking, genome-wide gap filling, etc. It is an important means of structural genomics research and functional genomics research. It is applied in the identification of transgenic plants and animals and their safety management. With the development of molecular biology, many methods for obtaining flanking sequences have been established, including plasmid rescue, inverse PCR, ligation-mediated PCR, semi-random primer PCR, whole-genome resequencing etc. In this review, we summarize and compared different methods for acquiring flanking genomic sequence. The principles and research progress of each approach are discussed.

Key words: flanking sequence, plasmid rescue, inverse PCR, ligation-mediated PCR, semi-random primer PCR, whole-genome resequencing