Fig. 2. A comparison of the expression profiles of 15 representative genes encoding photosynthetic light reaction proteins. (A) Hierarchical clustering display of expression ratios from dark-grown pleiotropic cop/det/fus mutants seedlings versus dark-grown wild-type seedlings, in comparison with normal and high-light regulation and CRY1 overexpression affected by blue-light regulation. Lane 1, normal white light and dark-grown wild-type seedlings; lane 2, dark-grown cop1-6 and wild-type seedlings; lane 3, dark-grown cop1-1 and wild-type seedlings; lane 4, dark-grown cop1-8 and wild-type seedlings; lane 5, dark-grown det1-1 and wild-type seedlings; lane 6, of dark-grown det1-6 and wild-type seedlings; lane 7, blue light-grown CRY1 OE and wild-type seedlings; lane 8, high intensity (2500 µmol/m²/second) and normal intensity (150 µmol/m²/second) light-grown wild-type seedlings. (B) Hierarchical clustering display of expression ratios of normal white light-grown pleiotropic cop/det/fus mutants seedlings versus white light-grown wild-type seedlings, in comparison with normal white light regulation. Lane 1, white light and dark-grown wild-type seedlings; lane 2, light-grown cop1-6 and wild-type seedlings; lane 3, light-grown cop1-1 and wild-type seedlings; lane 4, light-grown cop1-8 and wild-type seedlings; lane 5, light-grown det1-1 and wild-type seedlings; lane 6, light-grown det1-6 and wild-type seedlings; lane 7, high intensity (2500 µmol/m²/second) and normal intensity (150 µmol/m²/second) light-grown wild-type seedlings. The color scale for A and B is shown at the bottom of B. Positive numbers represent fold of induction and negative numbers represent fold of repression.