AZI1 is involved in signal transport associated with systemic resistance.
Metabolomic profiles in the systemic leaves were determined by 1H NMR spectroscopy.
Soluble carbonhydrates might function as signal substances in systemic immunity.
The function of AZI1 in SAR is interrelated with sugar signaling.
sn-glycero-3-phosphocholine accumulated after infection with avirulent pathogen.