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Acta Horticulturae Sinica ›› 2022, Vol. 49 ›› Issue (7): 1532-1544.doi: 10.16420/j.issn.0513-353x.2021-0475

• Research Papers • Previous Articles     Next Articles

CRISPR/Cas9 Technology for RcPDS1 Gene Editing in Rehmannia chingii

ZUO Xin1, LI Mingming1, LI Xinrong1, MIAO Chunyan1, LI Yanfang1, YANG Xu1, ZHANG Zhongyi2, WANG Fengqing1,*()   

  1. 1College of Agronomy,Henan Agricultural University,Zhengzhou 450046,China
    2College of Agriculture,Fujian Agriculture and Forestry University,Fuzhou 350002,China
  • Received:2021-11-15 Revised:2022-03-15 Online:2022-07-25 Published:2022-07-29
  • Contact: WANG Fengqing E-mail:heauzycxw@126.com

Abstract:

To study the application of CRISPR/Cas9 technology in Rehmannia chingii,the phytoene desaturase gene(RcPDS1)of R. chingii was cloned,and its cDNA sequence and genomic DNA sequence were amplified by polymerase chain reaction(PCR). The constructed single-target CRISPR/Cas9 plasmid was transformed into R. chingii genome using Agrobacterium-mediated genetic transformation method,and the types of gene editing were analyzed by TA clone sequencing. The results showed that the full-length cDNA sequence of RcPDS1 was obtained. The cDNA sequence of RcPDS1 with a length of 1 743 bp contains a single open reading frame,which encoding 580 amino acid residues. The length of genomic DNA sequence of RcPDS1 gene is 8 041 bp,which contains 14 introns and 15 exons. A total of 57 transgenic lines were obtained through A. tumefaciens-mediated genetic transformation,of which 20 lines(35.09%)had the obvious albino phenotype. The results of sequence analysis showed that the target sites mutation modes of RcPDS1 were mainly deletions,substitutions and insertions. It showed that the CRISPR/Cas9 system is a powerful tool to achieve targeted knockout of target genes in R. chingii genome.

Key words: Rehmannia chingii, CRISPR/Cas9, RcPDS1, gene editing

CLC Number: