Abstract
MicroRNAs are small, endogenous, non-coding RNAs found in plants, animals, and in some viruses, which negatively regulate the expression of genes by promoting the degradation of target mRNAs or by translation inhibition. Ever since the discovery of miRNAs, its biology, mechanisms, and functions were extensively studied in the past two decades. Plant and animal miRNAs both regulate target mRNAs, but they differ in scope of complementarity to their target mRNA. Plant microRNAs are known to play essential roles in a wide array of plant development. To date, there are many studies giving evidence that the regulation of miRNA levels can reprogram plant responses to abiotic (physical environment) and biotic stresses (pathogen and herbivore). Most of these studies were first carried out in the model plant Arabidopsis thaliana. Recently, the trend of miRNA research is furthering its role in crop breeding and its evolutionary origin. In this review, we presented the dynamic biogenesis of microRNAs, the diverse functions of miRNAs in plants, and experimental designs used in studying microRNAs in plants, and most importantly, we presented the applications of microRNA-based technology to improve the resistance of crops in abiotic and biotic stresses.
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Acknowledgements
This research review was supported by the Next-Generation BioGreen 21 Program (Plant Molecular Breeding Center, No. PJ013207), Rural Development Administration, and by the Golden Seed Project (No. 213009-05-1-WT211), Ministry of Agriculture, Food and Rural Affairs (MAFRA), Republic of Korea.
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Nogoy, F.M., Niño, M.C., Song, J.Y. et al. Plant microRNAs in molecular breeding. Plant Biotechnol Rep 12, 15–25 (2018). https://doi.org/10.1007/s11816-018-0468-9
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DOI: https://doi.org/10.1007/s11816-018-0468-9