Fig. 1: Whitefly infestation-induced SA accumulation increases plant resistance to TbCSV, but not to the TbCSV + TbCSB complex.

a Schematic representation of experimental design. b SA content in tobacco plants upon whitefly infestation (48 h). c Quantity of TbCSV in tobacco plants that were first infested by whiteflies (48 h) and then inoculated with TbCSV or TbCSV+TbCSB. d Quantity of TbCSV in tobacco plants that were first sprayed with ethanol (control) or SA and then inoculated with TbCSV or TbCSV+TbCSB. e SA content in Nicotiana benthamiana plants upon whitefly infestation (48 h). f Quantity of TbCSV in N. benthamiana plants that were first infested by whiteflies (48 h) and then inoculated with TbCSV or TbCSV+TbCSB. g Quantity of TbCSV in wild type and NahG-transgenic N. benthamiana plants that were first infested by whiteflies and then inoculated with TbCSV. h–j Quantity of TbCSV in N. benthamiana plants that were first sprayed with ethanol (control) or SA (0.5, 1 or 2 mM) and then inoculated with TbCSV or TbCSV+TbCSB. N = 4–5 samples (2–3 plants per sample) for (b, e), 15–16 plants for (c, d), 9–13 plants for (f), 16 plants for (g), 10 plants for (h), 13–16 plants for (i), 16–17 plants for (j). Data are mean ± SEM. n. s. stands for no significant difference, *P < 0.05, **P < 0.01, and ***P < 0.001 (one-way ANOVA for (b–d); two-sided Student’s t test for e–j). Source data and the exact P-values are provided in Source Data file.