Figure 8. Activity of hexylresorcinol on Arabidopsis thaliana col-0.

A. Hypocotyl extension assay (1 mm scale bars). Left: control plant grown in the absence of hexylresorcinol. Centre: plant grown on 40 μM hexylresorcinol exhibiting normal morphology. Right: plant grown on 40 μM hexylresorcinol exhibiting dwarf morphology. B. Cyro-electron microscopy images of hypocotyls (100 μm white scale bar). Top: control plant grown in absence of hexylresorcinol. Middle: plant grown on 40 μM hexylresorcinol exhibiting normal morphology. Bottom: plant grown on 40 μM hexylresorcinol exhibiting dwarf morphology. C. Three-week-old Arabidopsis plants grown on 40 μM hexylresorcinol. A control plate which did not contain the compound was also included. Photos at a higher magnification were taken of plants displaying different morphologies. Plants 2, 5 and 7 displayed the “dwarf” morphology, whilst plants 1 and 6 were similar to the control in appearance. Plants 3 and 4 appeared intermediate in morphology. All hexylresorcinol-grown plants appeared somewhat transparent compared to the control plants.