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. 2019 Aug 1;20(15):3766. doi: 10.3390/ijms20153766

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The regulation of drought tolerance and response in rice. The regulation of drought tolerance and response by key miRNAs via auxin, ABA, GA, BR, and ethylene. Processes like programmed cell death, senescence, ROS homeostasis, growth and development, photosynthesis, and yield are regulated by miRNAs through its respective targets for better drought tolerance. The colored arrows show the regulation of miRNA by different phytohormones (yellow: GA, blue: ABA, orange: auxin, green: BR, purple: ethylene). The black arrows indicate the regulation of target genes/transcription factors by miRNA and the regulation of drought responses by the target genes/transcription factors. The black ovals represent target genes/transcription factors).