S. moellendorffii RHEs Show Root Hair-Enriched Gene Expression in Arabidopsis.
(A) Promoter regions of two S. moellendorffii EXPA7-orthologous genes (Selmo1_75237 and Selmo1_78615) carrying multiple RHEs (gray bars). Numbers indicate relative positions to the start codon (+1).
(B) The RHE sequences of Selmo1_75237 and Selmo1_78615. Strictly conserved nucleotides are in bold.
(C) and (D) Root hair-enriched patterns of GFP expression driven by the RHEs of Selmo1_75237
(C) and Selmo1_78615
(D) in the Arabidopsis root. RHE regions of the S. moellendorffii genes are fused with the EXPA7 minimal promoter region to express GFP. Bar = 10 μm.