Figure 2.

Chromatography of phenolic compounds. HPLC analyses (unprocessed A₃₁₄ versus retention time) of methanolic extracts from a greenhouse-grown leaf (0:GH), and from leaves exposed for 7 d to vis, vis + UVA, or vis + UVA + UVB conditions designated “7:vis,” “7:vis + A,” and “7:vis + A + B,” respectively, are shown. Absorbance spectra representing the peaks labeled 1 through 10 are depicted in Figure 3. Std, The internal standard, quercetin.