Figure 7: Model of the interaction between M. persicae and Chinese cabbage plants.
M. persicae infestation activated salicylic acid (SA) signaling pathway and increase accumulation of glucosinolates in Chinese cabbage leaves, which have antibiotic and antixenotic effects to M. persicae. SA is a positive regulator of glucosinolates and SA possibly promote plant senescence that may contribute to the increase of free amino acid in plant leaves23,32. Amino acid is a key nutrition for aphids20,21. Thus, M persicae reduce direct resistance of Chinese cabbage likely contributes to the higher nutritional quality in infested leaves. Solid arrows indicate promotion or positive modulation of the processes and dashed arrows indicate possible promotion of the processes. Vertical bar indicates negative modulation of the process.
