Scientists Use CRISPR to Develop Apples Resistant to Fire Blight
September 25, 2019| |
Erwinia amylovora, the bacterium that causes the fire blight disease in apple, triggers its infection through the DspA/E effector which interacts with the apple susceptibility protein MdDIPM4. Researchers from Fondazione Edmund Mach used the CRISPR-Cas9 system to produce defective MdDIPM4 which were delivered to susceptible apples using Agrobacterium tumefaciens. The results are published in the Plant Biotechnology Journal.
A total of 57 transgenic lines were generated with an editing efficiency of 75%. Out of the 57, 7 lines exhibited successful mutation leading to loss of function of MdDIPM4. These lines were exposed to fire blight and results showed a highly significant reduction of susceptibility when compared to the control.
The results provide information on the development and application of CRISPR-Cas9 for the production of edited apples with a minimal trace of exogenous DNA.
Read more results in the Plant Biotechnology Journal.
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