“…Since aphids, in general, have been shown to be more sensitive to plant defense involving the JA signaling pathway, SA induction is considered to be a way for aphids to deceive the plant because cross-talk between hormonal pathways hinders the SA-induced plant to fully induce the JA and ET pathways (Thompson and Goggin 2006; De Vos et al, 2007; Goggin, 2007; Walling, 2008). Indications of this SA–JA antagonism have been found in the global expression studies of Acyrthosiphon pisum Harris on susceptible barrel medic (Sun et al, 2018), Myzus persicae Sulzer on potato (Alvarez et al, 2014), Schizaphis graminum Rondani on susceptible sorghum (Zhu-Salzman et al, 2004), Melanaphis sacchari Zehntner on sorghum (Kiani and Szczepaniec, 2018), Macrosiphum euphorbiae Thomas on susceptible tomato (Coppola et al, 2013), and Sitobion avenae Fabricius on susceptible wheat (Ferry et al, 2011). However, in the study by Bricchi et al (2012), there was no indication of SA-dependant crosstalk and yet many genes in the JA pathway were downregulated by M. persicae on susceptible Arabidopsis at the early sampling of 5 h after aphid infestation.…”