After 10 days of Ti treatment, 950 and 1277 were detected as up and downregulated genes, respectively, in the root. We also determine that 57 and 79 genes were up and downregulated, respectively, in shoots. Venn analysis helped us to determine sets of genes that are common or uniquely upregulated and downregulated at 10 days across the two tested tissues. In the case of upregulated genes, only six genes are shared, whereas 944 and 51 are specific for root and shoot, respectively ( Figure 4A). In the case of downregulated genes, 20 genes were shared, whereas 1257 and 59, were specific for root and shoot, respectively (Supplementary Figure S4, Supplementary Tables S3-S6). These **data** suggest that Ti treatment causes changes in the transcript level of a large number of genes in the roots, while it causes changes in transcript level in only a few genes in the shoot, and that the responses to Ti seem to be mainly organ specific.