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CRISPR/Cas-Mediated Genome Editing for Sugarcane Improvement

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Abstract

Sugarcane (Saccharum spp. hybrids) is among the significant industrial cash crops. It serves as an essential raw material to produce biofuels and the global sugar industry. Natural selection, conventional breeding, and more recently, the cutting-edge tools from genetic engineering and biotechnology, have been used to develop and improve the crop since the dawn of civilization. Heterozygous, polyploid, and complex genome of the sugarcane makes its improvement through breeding approaches a bit difficult. The vulnerability potential of sugarcane to abiotic/biotic stressors is further increased by their frequent occurrences. Due to this, efforts to improve sugarcane varietals using biotechnological approaches have increased. In this context, the implementation of genome editing technologies will result into yield promising output. The CRISPR/Cas9 approach was successful in targeting multiple alleles of the magnesium chelatase gene in sugarcane. The genome-edited lines of sugarcane with modified cell wall components for bioethanol production were developed in Brazil. As far as the regulatory system for genome editing is concerned, the site-directed nuclease 1 and 2 (SDN 1 and 2) are exempted. In the present paper, the applications of the CRISPR/Cas9 technology to combat biotic/abiotic stresses in sugarcane in order to improve its agricultural traits have been summarized.

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Abbreviations

ABA:

Abscisic acid

AFD:

Antifungal diene compound

Cas:

CRISPR associated

CCoAOMT :

Caffeoyl-Coa O-methyltransferase

COMT :

Caffeic acid O-methyltransferase

CRISPR:

Clustered regularly interspaced short palindromic repeats

crRNA:

CRISPR RNA

DS:

Double-strand

DSB:

Double-strand break

F5H:

Ferulate 5-hydroxylase

GE:

Genetic engineering

gRNA:

Guide RNA

NHEJ:

Non-homologous end-joining

PAM:

Protospacer adjacent motif

PR:

Pathogenesis related

SDN:

Site directed nuclease

TALENs:

Transcription activator-like effector nucleases

Tracer RNA:

Trans-activating CRISPR RNA

ZFNs:

Zinc finger nucleases

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Correspondence to Varucha Misra.

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Mall, A.K., Manimekalai, R., Misra, V. et al. CRISPR/Cas-Mediated Genome Editing for Sugarcane Improvement. Sugar Tech (2024). https://doi.org/10.1007/s12355-023-01352-2

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  • DOI: https://doi.org/10.1007/s12355-023-01352-2

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