ATM and ATR, two central players of the DNA damage response, are involved in the induction of systemic acquired resistance by extracellular DNA, but not the plant wound response.

In fact, we observed a highly significant treatment effect on JA in the entire dataset and also when analysing each genotype with individual ANOVAs, while we detected only marginally significant differences among the mutants and the WT ( Figure 4B , p = 0.012 for genotype and p = 0.453 for the interaction).

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