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Current Protein & Peptide Science

Editor-in-Chief

ISSN (Print): 1389-2037
ISSN (Online): 1875-5550

Mini-Review Article

Implications of CRISPR-Cas9 in Developing Next Generation Biofuel: A Mini-review

Author(s): Sudarshan Singh Lakhawat, Naveen Malik, Vikram Kumar, Sunil Kumar and Pushpender Kumar Sharma*

Volume 23, Issue 9, 2022

Published on: 26 September, 2022

Page: [574 - 584] Pages: 11

DOI: 10.2174/1389203723666220907110310

Price: $65

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Abstract

The major drawbacks of biofuel production at the commercial level are its low yield, nonavailability of feedstock, feedback inhibition, presence of inhibitory pathways in various organisms, and biofuel intolerance of organisms. The present review focuses on the implications of the CRISPRCas9 mediated gene editing tool to alter the genome of bacteria, algae, fungi, and higher plants for efficient biofuel production. Gene knockout and gene cassette insertions employing CRISPR-Cas9 in Saccharomyces cerevisiae and Kluyveromyces marxianus have resulted in enhanced production of bioethanol and 2-Phenyl ethanol in these organisms, respectively. Genomes of several bacterial strains were also modified to enhance ethanol and butanol production in them. CRISPR-Cas9 modification of microalgae has demonstrated improved total lipid content, a prerequisite for biofuel production. All over, CRISPR-Cas9 has emerged as a tool of choice for engineering the genome and metabolic pathways of organisms for producing industrial biofuel. In plant-based biofuel production, the biosynthetic pathways of lignin interfere with the satisfactory release of fermentable sugars thus hampering efficient biofuel production. CRISPR-Cas9 has shown a promising role in reducing lignin content in various plants including barley, switchgrass, and rice straw.

Keywords: Biofuels, CRISPR/Cas9, gene editing, lignin, ethanol, energy.

Graphical Abstract
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