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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (12): 86-92.doi: 10.11924/j.issn.1000-6850.casb2022-0660

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miRNA in Regulating Seed Development and the Response to Abiotic Stress in Plant: A Review

LIU Yang1,2(), YANG Jiaqing1,2, YU Xurun1,2, XIONG Fei1,2()   

  1. 1 Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology, Agricultural College of Yangzhou University
    2 Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops, Yangzhou University, Yangzhou, Jiangsu 225009
  • Received:2022-08-28 Revised:2022-11-27 Online:2023-04-25 Published:2023-04-21

Abstract:

microRNA (miRNA), an endogenous small non-coding RNA, regulates target genes by guiding mRNA cleavage or inhibiting translation. The role of miRNAs becomes extremely important in the regulation of plant seed development and the response to abiotic stress. In order to further identify and clarify the functions and regulatory mechanisms of miRNAs related to seed development and response to abiotic stress, the types, target genes and functions of miRNAs involved in the regulation of embryo and endosperm development in plant seed and in response to abiotic stress such as low temperature, salt and drought stress were summarized. miRNAs are highly conserved in evolution, and their expression is tissue-specific and time-specific during biological development, but they also have similarities among different plants. However, it remains to be further elucidated how regulators of miRNAs biogenesis and function are regulated during or after transcription, and how miRNAs use transcriptional cleavage and translation inhibition mechanisms to regulate their targets. Future research on these issues will not only provide new insights into plant seed development and plant response to abiotic stress, but also provide more ideas for post-transcriptional regulation of genes.

Key words: miRNA, seed development, endosperm development, abiotic stress, temperature stress, water stress, salt stress, mineral and nitrogen stress