Figure 8.

Reconstituted Expression of AMT1;3 but Not of AMT1;1 Restores Third-Order Lateral Root Development in qko.

Total third-order lateral root (LR) length (A), average third-order lateral root length (B), third-order lateral root density (C), and ¹⁵N concentrations (D) in roots from ¹⁵N-labeled ammonium supplied to the high N compartment. Wild-type, qko (amt1;1 amt1;2 amt1;3 amt2;1), qko+11 (amt1;2 amt1;3 amt2;1), or qko+13 plants (amt1;1 amt1;2 amt2;1) were grown for 15 d on vertically split agar plates with a localized supply of 0.8 mM ammonium. Bars represent means (±se), and different letters denote significant differences at P < 0.05 (Tukey’s test); ns, not significant; n = 15 to 20. DW, dry weight.