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Area of Science:

  • Plant biotechnology
  • Genome engineering
  • Molecular biology

Background:

  • Adenine base editors (ABEs) offer precise A-to-G base conversions in eukaryotic cells.
  • Plant genome engineering requires efficient and targeted DNA modification tools.

Purpose of the Study:

  • To evaluate the efficacy of plant-compatible adenine base editor systems in Arabidopsis thaliana and Brassica napus.
  • To demonstrate the application of ABEs for generating specific phenotypic changes in plants.

Main Methods:

  • Transient transfection of protoplasts from Arabidopsis thaliana and Brassica napus.
  • Agrobacterium-mediated transformation for in planta ABE delivery.
  • Targeted A-to-G substitutions in FT and PDS3 genes.

Main Results:

  • Successful application of ABE systems in plant protoplasts and whole plants.
  • Generation of a single amino acid change in FT protein leading to late-flowering phenotype.
  • Induction of PDS3 RNA mis-splicing, resulting in an albino phenotype.

Conclusions:

  • Plant-compatible ABE systems are effective for in planta genome engineering.
  • ABE technology enables induced neo-functionalization and altered mRNA splicing in plants.
  • This study opens new avenues for plant biotechnology and crop improvement.