Crispr Cas System in Plant Genome Editing a New Opportunity in Agriculture to Boost Crop Yield
Clustered regularly interspaced short palindromic repeats CRISPR/Cas9 technology evolved from a type II bacterial immune system develop in 2013 This system employs RNA-guided nuclease, CRISPR associated (Cas9) to induce double-strand breaks. The Cas9-mediated breaks are repaired by cellular DNA re...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Umaru Musa Yar'adua University, Katsina, Nigeria
2018-06-01
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| Series: | UMYU Journal of Microbiology Research |
| Subjects: | |
| Online Access: | https://ujmr.umyu.edu.ng/index.php/ujmr/article/view/257 |
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| Summary: | Clustered regularly interspaced short palindromic repeats CRISPR/Cas9 technology evolved from a type II bacterial immune system develop in 2013 This system employs RNA-guided nuclease, CRISPR associated (Cas9) to induce double-strand breaks. The Cas9-mediated breaks are repaired by cellular DNA repair mechanisms and mediate gene/genome modifications. The system has the ability to detect specific sequences of letters within the genetic code and to cut DNA at a specific point. Simultaneously with other sequence-specific nucleases, CRISPR/ Cas9 have already breach the boundaries and made genetic engineering much more versatile, efficient and easy also it has been reported to have increased rice grain yield up to 25-30 %, and increased tomato fruits size, branching architecture, and overall plant shape. CRISPR/ Cas also mediated virus resistance in many agricultural crops. In this article, we reviewed the history of the CRISPR/Cas9 system invention and its genome-editing mechanism. We also described the most recent innovation of the CRISPR/Cas9 technology, particularly the broad applications of modified Cas9 variants, and discuss the potential of this system for targeted genome editing and modification for crop improvement.
Abbreviations: CRISPR, clustered regularly interspaced short palindromic repeats; Cas, CRISPR associated; crRNA, CRISPR RNA; tracrRNA, trans-activating crRNA; PAM, protospacer adjacent motif; sgRNA, single guide RNA; gRNA, guide RNA; ssODN, single-stranded DNA oligonucleotide; DSB, double-strand break; NHEJ, non-homologous end joining; HDR, homology directed repair, CRISPRi ,CRISPR interference
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| ISSN: | 2616-0668 2814-1822 |