Figure 5.

Millimolar Ammonium Supply Cannot Restore Third-Order Lateral Root Development in qko.

Third-order lateral root (LR) length (A), third-order lateral root (LR) density (B), and ¹⁵N concentrations (C) in roots from ¹⁵N-labeled ammonium supplied to the HN compartment. Wild-type (wt) and qko (amt1;1 amt1;2 amt1;3 amt2;1) plants were grown on vertically split agar plates with a localized supply of increasing ammonium concentrations. Bars represent means (±se), and different letters denote significant differences at P < 0.05 (Tukey’s test); n = 10 to 15. DW, dry weight.