Figure 4.

Effects of T. virens inoculation on biomass production and lateral root development in wild-type Arabidopsis (Col-0) and auxin-related mutants. Plant material was harvested 5 d after fungal inoculation. Shoots were excised at the root/shoot junction, and the fresh weight was determined on an analytical balance. A, Shoot fresh weight. B, Lateral root number per plant. Values shown represent means of four groups of 10 seedlings ± sd. Lateral roots were quantified for 30 seedlings. Different letters are used to indicate means that differ significantly (P < 0.05). The experiment was repeated three times with similar results.