CRISPR/Cas9-Mediated Targeted Mutagenesis in Wheat Doubled Haploids

Area of Science:

• Agricultural biotechnology
• Plant genetics
• Genome editing

Background:

• CRISPR/Cas9 technology offers agricultural potential but faces challenges with recalcitrant plant species and long generation times.
• Developing homozygous gene-edited crops is time-consuming due to lengthy plant generation cycles.
• Haploid microspores present a promising target for rapid generation of homozygous mutants.

Purpose of the Study:

• To optimize genome editing methods for haploid wheat microspores.
• To establish efficient doubled haploid plant production from edited microspores.

Main Methods:

• Utilized CRISPR/Cas9 technology for targeted genome editing in wheat microspores.
• Developed and optimized microspore culture techniques for doubled haploid plant regeneration.

Main Results:

• Successfully applied genome editing to haploid wheat microspores.
• Generated homozygous doubled haploid wheat plants in a single generation.

Conclusions:

• Optimized CRISPR/Cas9 editing of wheat microspores enables rapid production of homozygous doubled haploid mutants.
• This approach significantly accelerates the application of gene editing in wheat breeding, overcoming key limitations.