Gill et al. [32] reported a remarkable up-regulation of OPR in switchgrass infected by P. emaculata in response to phosphite of K. Tomato plants sprayed with phosphite combined with free amino acids and infected by Septoria lycopersici activated the JA/ET pathway (stronger expression of ACO2, ACO3, ACO4, ACO5, LOX1.1, LOXB, LOXC, and PDF1.2) and exhibited increased resistance against fungal infection [53]. The gene discussed is LOXL4; the disease is fungal infectious disease.