Figure 2.

Fluence response relationships for RL-dependent enhancement of BL-induced phototropism in nph4 phyA (A) and nph4 phyB (B) double mutant seedlings. Seedlings were handled as described in Figure 1A. Data represent the mean response of at least 63 seedlings from three replicate experiments. Vertical error bars represent the se values. ●, Wild type; ○, nph4; ⋄, phyA; ♦, nph4 phyA; □, phyB; ▪, nph4 phyB.