Figure 4.

Restoration effects of amino acid treatment on exploratory root system in 10 μm AVG-treated seedlings. A, Root architectural changes induced in seedlings cotreated over 120 h with 10 μm AVG plus 1 mm l-Glu, 1 mm Gly, or 10 μm ACC under homogeneous feeding of N (approximately 2 mm). Control- and ACC-treated plants were fed with 2 mm of N to bring similar amounts of N (approximately 2 mm) between treatments. B, Restoration effects of pharmacological cotreatments on LR number and primary root length. Each bar indicates ± se for n = 20 when larger than the symbol.