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Journal of Integrative Agriculture  2022, Vol. 21 Issue (4): 901-916    DOI: 10.1016/S2095-3119(21)63818-2
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The roles of microRNAs in regulating root formation and growth in plants
YAN Xiao-xiao, LIU Xiang-yang, CUI Hong, ZHAO Ming-qin
College of Tobacco Science, Henan Agricultural University/National Tobacco Cultivation and Physiology and Biochemistry Research Center/Key Laboratory for Tobacco Cultivation of Tobacco Industry, Zhengzhou 450002, P.R.China
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MicroRNAs (miRNAs)是一类长度较小的非编码RNAs(约20-24个核苷酸),近年来被认为是基因表达的关键转录后调节因子,参与了植物多种生理生化过程,如根系生长与发育。miRNAs通过参与应答激素信号、营养吸收和生物/非生物胁迫反应来调节根系的伸长、侧根(AR)形成和不定根(AR)的发育。本文汇总了miRNAs参与调控植物根系生长发育的多方面的研究进展,还讨论了根系生长发育过程中miRNAs发挥功能的若干关键调控机制,miRNAs与转录因子的调控关系,以及与其靶基因介导的激素信号之间的相互调控作用。

Abstract  MicroRNAs (miRNAs) are small (ca. 20–24 nucleotides) non-coding RNAs that have recently been recognized as key post-transcriptional modulators of gene expression; and they are involved in many biological processes in plants, such as root growth and development.  The miRNAs regulate root elongation, lateral root (LR) formation and adventitious root (AR) development in response to hormone signaling, nutrient uptake and biotic/abiotic stress.  This review provides multiple perspectives on the involvement of miRNAs in regulating root growth and development in plants.  We also discuss several crucial mechanisms of miRNAs, their relationships with transcription factors and the target gene-mediated hormone signaling interactions in the regulation of root growth and development.
Keywords:  microRNAs       adventitious root       lateral root       primary root  
Received: 01 May 2021   Accepted: 06 August 2021
Fund: This work was funded by the Science and Technology Department of Henan Province, China (212102110046), the State Tobacco Monopoly Administration of China (110202101005 (JY-05)), the Science and Technology Project of China National Tobacco Corporation Henan Tobacco Company, China (2018410000270095), and the Undergraduate Innovation and Entrepreneurship Project of Henan Province, China (202110466042).  
About author:  YAN Xiao-xiao, Tel: +86-371-63555763, E-mail:; Correspondence CUI Hong, Tel: +86-371-63555763, E-mail:; ZHAO Ming-qin, Tel: +86-371-63555763, E-mail:

Cite this article: 

YAN Xiao-xiao, LIU Xiang-yang, CUI Hong, ZHAO Ming-qin. 2022. The roles of microRNAs in regulating root formation and growth in plants. Journal of Integrative Agriculture, 21(4): 901-916.

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