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Developing virus-resistant crops is key to managing plant diseases. Combining conventional breeding with genetic engineering strategies like RNA interference and gene editing offers durable, broad-spectrum resistance against multiple viruses.

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Area of Science:

  • Plant Pathology
  • Agricultural Science
  • Molecular Biology

Background:

  • Plant viruses cause significant global crop losses.
  • Genetic resistance is the most effective strategy for managing viral diseases in crops.
  • Developing broad-spectrum and durable resistance is crucial for managing mixed virus infections.

Purpose of the Study:

  • To review strategies for developing virus-resistant crops.
  • To highlight the importance of pyramiding resistance genes for durable and broad-spectrum protection.
  • To discuss conventional breeding and genetic engineering approaches for virus resistance.

Main Methods:

  • Conventional breeding utilizing dominant and recessive host genes.
  • Genetic engineering deploying virus-derived gene sequences for RNA interference.
  • Utilizing programmable nucleases to target viral sequences or host factors.
  • Combining conventional breeding and genetic engineering techniques.

Main Results:

  • Multiple strategies are successfully employed to develop virus-resistant crop cultivars.
  • Pyramiding resistance genes provides enhanced protection against diverse viral pathogens.
  • Genetic engineering offers precise methods for introducing or modifying resistance traits.

Conclusions:

  • The development of virus-resistant crops is essential for global food security.
  • Combining multiple resistance sources through breeding and genetic engineering is key to durable resistance.
  • Advancements in understanding virus-host interactions and crop genomics will accelerate the development of resistant cultivars.