Determination of the Effects of Local and Systemic Iron Excess onLateral Root Initiation in Arabidopsis thaliana.

Root system architecture depends on nutrient availability. A symptom of iron (Fe) toxicity in plants is stunted root growth, yet little is known about the effects of excess Fe on lateral root (LR) development. To better understand how nutrient signals are integrated into root developmental programs, we investigated the morphological response of Arabidopsis thaliana root systems to Fe by testing homogeneous supply and localized Fe supply treatment.