Workflow illustration. (a) Workflow for obtaining whiteflies used in the treatments. Two cultivars of tomato were used in this study, i.e. S. lycopersicum cv. Hezuo 903 (susceptible) and cv. Zheza 502 (resistant). For each of the three treatments, two biological replicates were conducted. All arrows indicate whitefly transfer. (b) Workflow for iTRAQ analysis.