Figure 1.

Expression profiling of the five genes (SULTR3;1, SULTR3;2, SULTR3;3, SULTR3;4, and SULTR3;5) encoding sulfate transporters of group 3 in Arabidopsis plant and seed tissues. A, Relative mRNA quantity estimated by qRT-PCR in developing seeds separated from pods, in mature seeds, in siliques collected at 7 to 10 d after flowering (DAF), and in other tissues of wild-type plants (Col-0) grown in sulfur-sufficient conditions. 7 DAF, Embryogenesis; 10 DAF, early seed filling. Bars represent means ± sd of three independent measurements from two biological experiments. B, Expression data in seed tissues from the Harada-Goldberg Arabidopsis LCM GeneChip Data Set (Seedgenenetwork at http://estdb.biology.ucla.edu/ seed/, Gene Expression Omnibus accession series GSE12404). These data were normalized to the highest expression value set to 1 and represented as a color scale (Genesis software; Sturn et al., 2002) in which red and yellow represent the highest and lowest expression values, respectively. For each gene, the maximum expression level is indicated by a white dot.