Date of growth axis appearance for control, mycorrhized (AM) and phosphate-fertilized plants (P_i).

<p>(A) The date when each growth axis appeared was calculated as the x-intercept from linearized plots of those shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0115314#pone.0115314.s001" target="_blank">S1 Fig.</a> Values with different letters for each axis are significantly different across treatments according to one-way ANOVA followed by Student-Newman-Keuls test (<i>P</i><0.05). (B) Difference in the date of growth axis appearance. The values obtained in (A) for each axis of the control plants were subtracted from the corresponding values obtained for the AM- and Pi-fertilized plants. *, Significantly different from each other. dpi, days post inoculation. For mycorrhization conditions, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0115314#pone.0115314.t001" target="_blank">Table 1</a>.