Figure 1.

Spatiotemporal expression levels of Arabidopsis NDPK genes in root tissues. (A) Left: Cross-section diagram of an Arabidopsis root from a 5–6 day old seedling taken from two different zones of development: young (meristematic zone) and old (elongation and maturation zones) as defined by ref. 22. Right: Schematic cut-away portion of stele in cross-section. Different root tissues are defined and color-coded. (B) Heatmap showing absolute spatiotemporal expression levels of NDPK genes in root tissues defined in (A). Expression values were obtained from Arabidopsis eFP Browser21 based on microarray root spatiotemporal map.22.