The transcription of PLA, PLD, PLC, and diacylglycerol kinase (DGK)-encoding genes and their enzymatic activities have been reported to be enhanced upon elicitor treatment and pathogen infection in tomato (Solanum lycopersicum), rice (Oryza sativa), Arabidopsis (A. thaliana), and tobacco (Nicotiana tabacum) [106,107,108] (Table 2). The gene discussed is HSPG2; the disease is infection.