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The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
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Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
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Advances in Crop Breeding Through Precision Genome Editing.

Gauri Nerkar1, Suman Devarumath2, Madhavi Purankar1

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Precision genome editing offers a powerful solution for crop scientists to enhance agricultural productivity and develop climate-resilient crops. This advanced breeding technique allows for precise genetic modifications, overcoming limitations of traditional methods and meeting global food demands.

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CRISPRGenome editingabiotic stress tolerancebiofortificationclimate-resilient cropscrop breedingdisease resistancenew breeding techniques

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Area of Science:

  • Agricultural Science
  • Plant Breeding
  • Genetics

Background:

  • Global climate change and other factors limit agricultural productivity, challenging crop scientists to meet rising food demands.
  • Traditional breeding and genetic engineering have limitations, such as restricted gene pools and transgene silencing.
  • Genome editing has emerged as a revolutionary technology for precise crop improvement.

Purpose of the Study:

  • To review advances in crop breeding through precision genome editing.
  • To provide an overview of breeding approaches, genome editing tools, and their applications.
  • To highlight the development of high-yielding, climate-resilient crops using genome editing.

Main Methods:

  • Overview of various crop improvement breeding approaches.
  • Detailed examination of genome editing tools, mechanisms, and applications.
  • Focus on CRISPR/Cas9 technology for enhancing agronomic traits.

Main Results:

  • Genome editing enables precise modification of crop genomes at targeted sites.
  • Key applications include improving disease resistance, abiotic stress tolerance, herbicide tolerance, yield, and quality.
  • Genome editing facilitates the reduction of anti-nutrients and extends shelf life.

Conclusions:

  • Genome editing is a faster, cheaper, and more precise method for crop modification compared to previous techniques.
  • It overcomes the limitations of traditional breeding and genetic engineering, broadening genetic diversity.
  • Precision genome editing is crucial for developing high-yielding, climate-resilient crops to ensure global food security.