Root and shoot tissue concentrations (ppm d. wt.) of Zn, Mn, and Mo at 24 dpi. Medicago truncatula wild-type (gray columns) and raz (open columns). a) is root Zn , b) is shoot Zn, c) is root Mn, d) is shoot Mn, e) is root Mo and f) is shoot Mo. Letter rankings indicate differences as determined by Tukey’s HSD at 95% confidence. Bars are standard error. * indicates trend evaluated at alpha = 0.1.