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Current Genomics

Author(s): Jitender Giri, Swarup K. Parida, Saurabh Raghuvanshi and Akhilesh K. Tyagi*

DOI: 10.2174/1389202921999201231205024

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Emerging Molecular Strategies for Improving Rice Drought Tolerance

Page: [16 - 25] Pages: 10

  • * (Excluding Mailing and Handling)

Abstract

Rice occupies a pre-eminent position as a food crop in the world. Its production, however, entails up to 3000 liters of water per kilogram of grain produced. Such high demand makes rice prone to drought easily. Sustainable rice cultivation with limited water resources requires the deployment of a suitable strategy for better water use efficiency and improved drought tolerance. Several drought-related genes have been evaluated in rice for their mode of action in conferring drought tolerance. Manipulation of components of abscisic acid signal transduction, stomatal density, deposition of cuticular wax, and protein modification pathways are emerging as priority targets. Gene reprogramming by microRNAs is also being explored to achieve drought tolerance. Genetically dissected Quantitative Trait Loci (QTLs) and their constituent genes are being deployed to develop drought-tolerant rice varieties. Progressive research and challenges include a better understanding of crucial components of drought response and search for new targets and the deployment of improved varieties in the field.

Keywords: Drought, microRNAs, molecular breeding, rice, transgenics, water-deficit.

Graphical Abstract

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