Research Progress on Regulation of miRNA in the Heat Stress Response of Plants

doi:10.13560/j.cnki.biotech.bull.1985.2019-0857

Abstract

Abstract: microRNA（miRNA）is a non-coding RNA comprised of 20-24 nucleotide. It can degrade or inhibit translation of the target gene after transcription through sequence complementation,and regulates gene expression at the post-transcriptional level. miRNAs serve as important regulatory factors involved in plant growth,development and stress response,and it is widely distributed in plant genomes. At present,a number of studies have shown that high temperature not only induces changes in the expression of plant coding genes,but also significantly changes the expression of some non-coding RNAs including miRNAs,which act as an important non-coding RNA that participates in the heat stress response of plants. In this review,we summarize the synthetic pathway,effect mechanism and main functions of miRNA,with a focus on the regulatory mechanism of plant miRNA in heat stress response. It provides new insight for the researches and application of miRNA in resistance to high temperature stress in plants.

Key words: plant, heat stress, miRNA, target gene, regulatory mechanism

LI Ze-qing, LIU Cai-xian, XING Wen, WEN Ya-feng. Research Progress on Regulation of miRNA in the Heat Stress Response of Plants[J]. Biotechnology Bulletin, 2020, 36(2): 149-157.

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