Figure 2.

csa1 Growth and Development under Natural and Simulated Shade.

(A) The response to natural shade. Leaf angle of seedlings grown for 14 d under fluorescent white light and placed on the morning of the 15th day in the field under either sunlight or canopy shade light for 5 h.

(B) Response to simulated shade. Hypocotyl length of seedlings grown for 3 d under short days (8 h white light/16 h darkness) ended with a 5-min red or far-red light pulse.

(C) and (D) Response to simulated shade. Wild-type and csa1 seedlings grown for 2 weeks under short days (8 h white light/16 h darkness) ended with a 5-min pulse of either red or far-red light.