Figure 1.

Lhcb1*2-GUS and Lhcb1 mRNA accumulation in wild-type and mutant seedlings. (A) Lhcb1*2-GUS activity in photobleached wild-type (WT), gun single, and gun double mutants. Seedlings were photobleached for 5 days, and GUS was extracted and assayed as described in Materials and Methods. In the absence of Nf, wild type expressed 20,120 ± 2,197 GUS units. (B) Lhcb1 mRNA accumulation in photobleached wild-type, gun single, and gun double mutants. Total RNA was analyzed as described in Materials and Methods from seedlings that were grown as described in A.