Figure 9.

Nitrate-modulated similarities and differences of lateral root branching in maize root types. Network view of morphology, anatomy, and transcriptome profiling in relation to the four maize root types under homogenous low nitrate (A) and local high nitrate (B) conditions. Grey shades of nodes correspond to the similarity of anatomical traits among the four root types (according to Supplemental Fig. S1 and Supplemental Table S1). Node size corresponds to the degree of lateral root branching response to local nitrate stimulus (according to Fig. 1). Thickened node outlines indicate more nitrate-responsive genes induced by local high nitrate stimulation (according to Figs. 3B and 6A). Line thickness between two nodes is proportional to the number of significantly changing genes (according to Fig. 5).