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Researchers Use Ribonucleoprotein Complexes for Genome Editing of Wheat
Posted by: Prof. Dr. M. Raupp (IP Logged)
Date: March 11, 2018 06:53AM

CRISPR-Cas9 DNA constructs are transformed into cells via
Agrobacterium-mediated transformation. However, this process is associated
with a high possibility of CRISPR-Cas9 DNA constructs being integrated into
the plant genome, causing unwanted genetic changes. Aiming to avoid this,
Zhen Liang of Chinese Academy of Sciences developed a genome editing method
for bread wheat (Triticum aestivum) using CRISPR-Cas9 ribonucleoproteins

The team successfully generated five mutants from immature wheat embryos.
Analysis reveals that the chance of off-target mutations in wheat cells was
much lower in RNP-mediated genome editing than in editing using DNA. No
off-target mutations were also detected in the mutant plants.

Since no foreign DNA was used in RNP-mediated genome editing, the mutants
obtained were completely transgene free.


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