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Functional Plant Biology Functional Plant Biology Society
Plant function and evolutionary biology
REVIEW (Open Access)

Plant miR397 and its functions

Shili Huang A , Jiajie Zhou A , Lei Gao A and Yulin Tang https://orcid.org/0000-0002-7098-8558 A B
+ Author Affiliations
- Author Affiliations

A Guangdong Provincial Key Laboratory for Plant Epigenetics, Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, Longhua Institute of Innovative Biotechnology, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, Guangdong province, China.

B Corresponding author. Email: yltang@szu.edu.cn

Functional Plant Biology - https://doi.org/10.1071/FP20342
Submitted: 31 October 2020  Accepted: 23 November 2020   Published online: 18 December 2020

Journal Compilation © CSIRO 2020 Open Access CC BY

Abstract

MicroRNAs (miRNAs) are noncoding, small RNAs of 20–24 nucleotides (nt) and function critically at the post-transcriptional level to regulate gene expression through cleaving mRNA targets or interfering with translation of the target mRNAs. They are broadly involved in many biological processes in plants. The miR397 family in plants contains several conserved members either in 21-nt or in 22-nt that mainly target the laccase (LAC) genes functioning in lignin synthesis and are involved in the development of plants under various conditions. Recent findings showed that miR397b in Arabidopsis could also target to Casein Kinase II Subunit Beta 3 (CKB3) and mediate circadian regulation and plant flowering. This review aims to summarise recent updates on miR397 and provides the available basis for understanding the functional mechanisms of miR397 in plant growth and development regulation and in response to external adverse stimulation.

Keywords: agricultural production, CKB3, LAC, lignin, microRNA, miR397, plant development, post-transcriptional, stress responses.


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