Pi-responsive genes exclusively regulated in wild-type and pdr2 roots. Shown is the linear fold change of all 241 genes that showed Pi-dependent expressional changes (p ≤ 0.05, Student’s t-test; 0.66 ≥ FC ≥ 1.5) in wild-type and pdr2 only, but not in lpr1lpr2 roots. Highlighted are genes that were differentially expressed in pdr2 (at least 2-fold higher or lower) compared to the wild-type. (XLSX 82 kb)