Supplemental Data

Files in this Data Supplement:

• Supplemental Figures 1-3 - Supplemental Figure 1. P_IAA14:GUS activity throughout different stages of lateral root development. On the left, GUS activity is visible in the xylem pole pericycle even before lateral root initiation. GUS activity is strongest in youngest lateral root primordia and becomes reduced when the new lateral root meristem matures.
  Supplemental Figure 2. Histochemical localization of plt1-1::GUS activity using a promoter-trap line during different stages of lateral root formation. plt1-1::GUS is clearly already expressed at stage I lateral root primordia (as already shown by Aida et al., 2004) and its expression becomes more and more restricted to the described expression domain as reported before for the primary root meristem.
  Supplemental Figure 3. Box plots of log₂-transformed normalized value distributions of all arrays.
• Supplemental Table 1 - Supplemental Table 1.List of the 3,110 significant genes.
• Supplemental Table 2 - Supplemental Table 2. List of the 913 lateral root initiation genes.
• Supplemental Table 3 - Supplemental Table 3. Overrepresented Gene Ontology functional categories of LRI genes vs all significant genes (A) and of the early induced LRI genes vs all significant genes (B).
• Supplemental Table 4 - Supplemental Table 4. Overlapping upregulated genes between the present study and that of Himanen et (2004) with the cluster combination and the cluster number and profile, respectively.
• Supplemental Table 5 - Supplemental Table 5. Expression profiles of the LRI genes in the arf7arf19 data set from Okushima et al. (2005).
• Supplemental Table 6 - Supplemental Table 6. LRI genes with arf7arf19 dependent auxin inducibility.
• Supplemental Table 7 - Supplemental Table 7. Cell cycle genes differentially regulated at a stringency level of p<0.01.