An Arabidopsis eY1H transcription factor resource. (a) Schematic of root stele cell types. (b) Stele cell-type expression profiles of the transcription factors present in our collection. Colors are as in a. (c) Family categorization of transcription factors within the resource. ‘Other’ are families with fewer than eight members (Supplementary Table 1). GRAS, gibberellic acid–insensitive, repressor of GA1 and scarecreow; DOF, DNA-binding with one finger; GATA, GATA DNA motif; HSF, heatshock factor; CO-like, Constans-like; ARF, auxin response factor; MADS, MCM1, Agamous, Deficiens and SRF box; HB, homeobox; and BZIP, basic leucine zipper.