Fig. 4.
Gene expression analysis of 4-week-old hydroponically grown rice plants in response to Zn supply. Shoot and root transcript levels of (A) OsbZIP48, (B) OsbZIP49, (C) OsbZIP50, (D) OsZIP2, (E) OsZIP4, (F) OsZIP8, and (G) OsZIP10, grown with control or –Zn nutrient solution. Bars represent mean fold change in the transcript level of three biological replicates ±SE. Statistically significant differences between control and –Zn conditions were determined by Student t-test (**P<0.01, ***P<0.001; ns indicates not significant). (H) Analysis of the number and position of detected ZDRE motifs in the promoter of each gene. aPosition of the first nucleotide of the ZDRE motif in relation to the start codon. bMismatches from the ZDRE consensus sequence (RTGTCGACAY).