Unveiling the biosynthesis, mechanisms, and impacts of miRNAs in drought stress resilience in plants.

Vijay Pratap Singh, Riyazuddin Riyazuddin, Kalpita Singh, Nadeem Iqbal, Nitin Labhane, Pramod Ramteke, Ravi Gupta

Journal: Plant physiology and biochemistry : PPB 2023;202():107978

PMID: 37660607

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Abstract

Drought stress is one of the most serious threats to sustainable agriculture and is predicted to be further intensified in the coming decades. Therefore, understanding the mechanism of drought stress tolerance and the development of drought-resilient crops are the major goals at present. In recent years, noncoding microRNAs (miRNAs) have emerged as key regulators of gene expressions under drought stress conditions and are turning out to be the potential candidates that can be targeted to develop drought-resilient crops in the future. miRNAs are known to target and decrease the expression of various genes to govern the drought stress response in plants. In addition, emerging evidence also suggests a regulatory role of long non-coding RNAs (lncRNAs) in the regulation of miRNAs and the expression of their target genes by a process referred as miRNA sponging. In this review, we present the regulatory roles of miRNAs in the modulation of drought-responsive genes along with discussing their biosynthesis and action mechanisms. Additionally, the interactive roles of miRNAs with phytohormone signaling components have also been highlighted to present the global view of miRNA functioning under drought-stress conditions.

Address: Institute of Plant Biology, Biological Research Centre, Temesvári krt. 62, H-6726, Szeged, Hungary. Electronic address: [email protected].; Doctoral School of Plant Sciences, Hungarian University of Agriculture and Life Sciences, 2100, Gödöllő, Hungary; Department of Biological Resources, Agricultural Institute, Centre for Agricultural Research, ELKH, Brunszvik u. 2, H-2462, Martonvásár, Hungary. Electronic address: [email protected].; Department of Plant Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary; Doctoral School of Environmental Sciences, University of Szeged, Szeged, Hungary. Electronic address: [email protected].; Department of Botany, Bhavan's College Andheri West, Mumbai, 400058, India. Electronic address: [email protected].; Department of Biotechnology, Dr. Ambedkar College, Nagpur, India. Electronic address: [email protected].; Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India.; College of General Education, Kookmin University, 02707, Seoul, Republic of Korea. Electronic address: [email protected].

DOI: 10.1016/j.plaphy.2023.107978

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MeSH Terms: Droughts, Crops, Agricultural, Drought Resistance, Agriculture, MicroRNAs