Downstream genes of SHR-PHB in the root stele.

(A) Hierarchical clustering of expression in the Arabidopsis root along the longitudinal axis for genes that are repressed (blue; genes in cluster 2 and 3 in S6C Fig.) or activated (red; genes in cluster 1 in S6C Fig.) by a high level of PHB in shr mutants. Expression values are normalized by row. (B) Over-represented biological functions of genes that are repressed (P-value marked in blue) or (C) activated (P-value marked in red) by a high level of PHB in shr mutants.