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MicroRNAs as targets for engineering biofuel feedstock Sorghum

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Abstract

Sorghum is a highly efficient C4 crop, with enormous potential as a biofuel feedstock. Fermentable sugars that accumulate in sorghum stalks, high biomass, drought tolerance and adaptability to diverse climates are some of the key attributes of sorghum. However, sustainable production of renewable fuels through large scale plantation of sorghum needs targeted research efforts at several fronts. One of the promising areas is manipulating gene expression to engineer traits-of-interest. In the recent past, microRNAs have emerged as important targets for engineering complex agronomical traits, including biomass yields, sugar accumulation, flowering time, drought tolerance, disease resistance, micronutrient homeostasis, etc., in several crop plants. Both homology-based bioinformatics, and experimental approaches viz. miRNA microarrays and small RNA sequencing have been utilised to gain insights into the role of miRNAs in regulating bioenergy-related traits in sorghum. Through this review, we provide a comprehensive overview of the information available till date about the miRNA-related research in sorghum and propose the prospective directions for future endeavours in this area.

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Acknowledgements

Financial support by Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India (ECR/2016/001581) is gratefully acknowledged. N.D. acknowledges the SERB-National Post-Doctoral fellowship. We thank Dr. Manoj K. Sharma for critical reading of the manuscript.

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  1. Crop Genetics and Informatics Group, School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Mehrauli Road, New Delhi, 110067, India

    Namrata Dhaka & Rita Sharma

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Correspondence to Rita Sharma.

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Dhaka, N., Sharma, R. MicroRNAs as targets for engineering biofuel feedstock Sorghum. Ind J Plant Physiol. 22, 484–492 (2017). https://doi.org/10.1007/s40502-017-0332-x

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