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Abstract

The finger millet (Eleusine coracana (L.) Gaertn) genome, comprised 166 conserved microRNAs (miRNAs) belonging to 39 families and three novel miRNAs. The miR169 is one of the most conserved miRNA families, while Eco_N1 is a species-specific miRNA prevalent in finger millet. Its members regulate the expression of genes encoding the Nuclear Factor-Y subunit A (NF-YA) via transcript cleavage. However, the role of miRNA genes in regulating the expression of NF-YA transcription factors in finger millet needs to be deciphered. The present study characterized 166 conserved and novel miRNAs (Eco_N1, Eco_N2 and Eco_N3). Further, secondary structures were predicted, and the potential miR genes targeting the NF-YA transcription factors regulating abiotic stress tolerance were analysed. Twenty-three Eco-miR169 members and one Eco_N1 miRNA targeting EcNF-YA13 were identified in the finger millet genome. The presence of relevant cis-elements such as ABRE (abscisic acid-responsive elements), DRE (dehydration-responsive element), and MYB (myeloblastosis) indicates that the target of Eco-miR169 might be involved in abiotic stress responses. The tissue-specific RNA-seq transcriptomic expression pattern of Eco-miR169 showed variable fold of expression in seedlings compared to the control. At the same time, the expression of EcNF-YA13 (target genes of Eco-miR169 members and Eco_N1) presented a downregulated trend under salinity and dehydration conditions compared to the control. Tissue-specific RNA-seq followed by expression analysis confirmed the antagonistic effect of Eco-miR genes on EcNF-YA13. In a nutshell, the results of this study could be utilized as a platform for further exploration and characterization of finger millet Eco-miR169-EcNF-YA13gene regulatory network.

Details

1009240
Taxonomic term
Title
Identification and characterization of Eco-miR 169-EcNF-YA13 gene regulatory network reveal their role in conferring tolerance to dehydration and salinity stress in finger millet
Volume
15
Issue
1
Pages
12338
Publication year
2025
Publication date
2025
Publisher
Nature Publishing Group
Place of publication
London
Country of publication
United States
Publication subject
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
Document type
Journal Article
Publication history
 
 
Online publication date
2025-04-10
Milestone dates
2025-03-26 (Registration); 2024-09-09 (Received); 2025-03-24 (Accepted)
Publication history
 
 
   First posting date
10 Apr 2025
ProQuest document ID
3188945504
Document URL
https://www.proquest.com/scholarly-journals/identification-characterization-i-eco-mir-169/docview/3188945504/se-2?accountid=208611
Copyright
Copyright Nature Publishing Group 2025
Last updated
2025-04-12
Database
ProQuest One Academic