CHYR1 ubiquitinates the phosphorylated WRKY70 for degradation to balance immunity in <i>Arabidopsis thaliana</i>

It is critically important for plants to control the trade-off between normal growth and pathogen immunity. However, underlying molecular mechanism remains largely unknown. Here we report such a controlled by WRKY70 its partner CHYR1 in Arabidopsis. We found that both levels of target gene SARD1 phosphorylated forms were increased WRKY70OE upon Pst DC3000 infection. Mechanistically, phosphorylation at Thr22 Ser34 occurs, which then activates expression through binding WT box. Phosphorylated degraded 26S proteasome via when resuming after In addition, nonphosphorylated represses W (inhibitory activity site) (active boxes. The alternative cis-elements phosphorylation-mediated switch contributes modulating balance immunity growth.