Comparison of the leaf color of wild-type, gun,
cch, and cs plants. Two-week-old
wild-type and mutant plants (Left ), a 1-week-old
putative gun4gun5 double mutant (Upper
Right), and a 1-month-old putative gun1gun4gun5
triple mutant (Bottom Right). Mutants were grown in
long-day conditions at fluence rates of 50
μmol/m2/sec.