Figure 5.

Increased adenine nucleotide pools in DF-treated seedlings supplemented with hypoxanthine and xanthine. Data were generated from the seedlings shown in Figure 4. Total adenine nucleotides (TAN), top; ATP, bottom left; ADP, bottom middle; AMP, bottom right. Bar 1, 250 μm hypoxanthine; bar 2, 250 μm hypoxanthine + 300 nm DF; bar 3, 250 μm xanthine; bar 4, 250 μm xanthine + 300 nm DF. Data expressed as the mean ± sd, n = 4, except hypoxanthine alone (n = 3). *, P < 0.05 when compared to the corresponding no DF condition in an unpaired two-tailed t test.