Figure 1

Dissection of gene-expression domains in the Arabidopsis root. (a) Schematic overview of the root. DIV, cell division zone; EXP, zone of rapid cell expansion; DIFF, zone of cell differentiation. (b) Tissue and cell types as sorted by fluorescence-activated cell sorting (FACS) in the study by Birnbaum et al. [5]. V, (pro-)vascular cells; E, endodermis; E/C, endodermis and cortex; Ep, epidermis; LR, lateral root cap. (c) Manually dissected regions, also used in [5]. (d) Gene-expression patterns that are distributed in a graded manner through the developmental stages become discrete in (e) the 'digital in situ' representation. (f) The expression pattern of genes expressed in distinct zones that differ per tissue type becomes averaged in (g) the digital version throughout the tissues and stages.