Figure 2.

Effect of root exudates derived from plants grown in low and high R/FR light on hyphal elongation. The increase in hyphal length was measured 2 weeks after treatment on M medium containing root exudate from either low (n = 50) or high R/FR (n = 50) light-grown plants. The mock (n = 50) treatment consists of 50-fold concentrated 1/2 strength Hoagland's liquid medium. The data represent averages ± SE of independent experiments. Error bars represent SE. Means denoted by the same letter do not differ significantly at P < 0.01 (Tukey multiple comparison test).