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Related Experiment Video

Updated: Sep 16, 2025

Author Spotlight: Streamlining Rice Breeding with CRISPR/Cas for Obtaining Optimal Phenotypic and Agronomic Traits
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Efficient and versatile rapeseed transformation for new breeding technologies.

Kea Ille1, Siegbert Melzer1

  • 1Plant Developmental Biology and Physiology, Kiel University, Am Botanischen Garten 5, 24118, Kiel, Germany.

The Plant Journal : for Cell and Molecular Biology
|July 10, 2025
PubMed
Summary
This summary is machine-generated.

We developed a new method for efficiently transforming winter rapeseed, overcoming regeneration challenges. This enables faster gene function studies in this important crop by editing multiple homologous genes simultaneously.

Keywords:
Brassica napusCLV3CRISPRSPL15SPL9WUSCHELrecalcitrant winter rapeseedtransformation

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Area of Science:

  • Plant Biotechnology
  • Crop Science
  • Molecular Biology

Background:

  • Arabidopsis gene function knowledge is extensive but difficult to apply to crops due to transformation limitations.
  • Winter rapeseed (Brassica napus L.) is recalcitrant to in vitro regeneration and transformation, hindering gene function analysis.
  • The allotetraploid nature of Brassica napus and genome triplication in the genus complicate gene function studies due to numerous homologs.

Purpose of the Study:

  • To establish an efficient transformation and regeneration method for winter rapeseed.
  • To enable simultaneous gene family editing and functional analysis in Brassica napus.
  • To overcome limitations in studying gene function in recalcitrant crop species.

Main Methods:

  • Utilized the WUSCHEL gene from Beta vulgaris to enhance winter rapeseed regeneration.
  • Employed Agrobacterium-mediated transformation for both winter and spring rapeseed genotypes.
  • Applied CRISPR/Cas9 gene editing to target BnCLV3 and BnSPL9/15 gene families.

Main Results:

  • Successfully established an efficient transformation protocol for winter rapeseed regeneration.
  • Demonstrated simultaneous editing of entire gene families (BnCLV3, BnSPL9/15) in Brassica napus.
  • Observed mutant phenotypes in primary transformants, indicating successful biallelic knockouts of up to eight homologous genes.

Conclusions:

  • The developed method significantly improves the efficiency of gene function studies in winter rapeseed.
  • This protocol facilitates the rapid characterization of gene families, including redundant homologs, in Brassica napus.
  • The WUSCHEL-assisted transformation system provides a powerful tool for crop improvement and functional genomics in Brassicaceae.