Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (2): 47-52.doi: 10.13560/j.cnki.biotech.bull.1985.2017.02.007

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Technology of Artificial microRNA and Its Application in Breeding Disease-resistant Plants

LIN Yi-hua1, ZHENG Tao1, GAO San-ji2, CHEN Zhen-dong1   

  1. 1. Fujian Institute of Tropical Crops,Zhangzhou 363001;
    2. National Engineering Research Center for Sugarcane,Fujian Agriculture and Forestry University,Fuzhou 350002
  • Received:2016-05-26 Online:2017-02-26 Published:2017-02-08

Abstract: Endogenous microRNAs(miRNAs)are recognized as important regulators of gene expression in eukaryotes. Artificial microRNA(amiRNA)is an effective strategy of silencing endogenous gene based on natural miRNAs. Using amiRNA to replace the miRNA/miRNA* sequence in plant’s endogenous miRNA precursor,the generated amiRNA match the target gene,specifically suppressing the expression of target gene. Here,we summarize the synthetic process and action mechanism of natural miRNA,the basic design principles and construction methods of amiRNA,and the application of artificial miRNA technique in breeding disease-resistant plant.

Key words: miRNA, artificial miRNA, transgenic, disease-resistant breeding