Figure 3 Relative expression of genes related to purine
degradation and ureide metabolisms in roots and shoots of 4 to 7-day old
rice seedlings. Rice plants were hydroponically grown under the control
condition and 0.3 mmol L-1 biuret toxicity. (a-h)
Relative expression levels of OsXO (a), OsUO (b),OsALNS (c), OsALN (d), OsUPS1 (e), OsUPS2(f), and OsUPS3 (g). The expression levels were normalized to the
expression of Ubiquitin and Actin1 and expressed in log2
scale. Gray and black symbols indicate control and biuret treated
samples, respectively. Crossbars indicate means of the three samples.
(h) Allantoin concentration in 8-day-old seedlings. Ten plants were
combined for a single sample. Boxes indicate mean of three samples, and
symbols indicate each sample. Asterisks indicate statistically
significant difference between the treatments at the time point (Welch’s
t-test). *p < 0.05; **p < 0.01;
***p < 0.001.