Figure 1. Accumulation of Sl-IAA27 (A) and Mt-IAA27 (B) transcripts in uninoculated roots (MYC−) and in mycorrhized roots (MYC+) of 12-week-old tomato plants and 8-week-old Medicago truncatula plants, respectively. qRT-PCR analyses were performed according to Lauressergues et al.,²³ with n = 6, error bars represent SEM. Stars indicate significant differences when compared with corresponding control, according to the Kruskal–Wallis test (P< 0.05).