Figure 3.

The effect of clinostating on the fluence rate-response curves for phototropism of the P. blakesleeanus wild-type NRRL1555. Sporangiophores were exposed for 8 h to monochromatic, unilateral light of the indicated wavelengths and the bending angle in the plane of bending (polar angle) was then determined. ●, No clinostating. ○, With clinostating. Top panel, 369 nm; bottom panel, 454 nm. se of 10 to 15 determinations. For symbols without error bar, the se was smaller or equal to the size of the symbol. The solid lines connecting the experimental points represent the fits to the hyperbolic function: y = ax/(x + b) + cx/(x + d) (Eq. 1).