Fig. 2
From: Identification of an anti-plant-virus molecule in Alpinia zerumbet
Antiviral activities of purified A. zerumbet extracts against GFP-tagged ToMV virions. Nicotiana benthamiana plants were treated with water (control) and different concentrations (250 ppm to 500 ppm) of purified samples from the aqueous extract of A. zerumbet, and then inoculated with GFP-tagged ToMV at three days post treatment. The GFP spots formed on the inoculated leaves were counted at 3 dpi. Protecting value (%) = (1 − number of GFP spots on the treated plants/number of GFP spots on the control plants) × 100. Asterisks indicate significant differences between the control and treated plants at each leaf position by one-way ANOVA with the Tukey–Kramer method (p < 0.05)