Figure 5.
Chloroplasts from the gnc cga1 mutant and GNC overexpression lines exhibit normal photosynthetic activity. A and B, Seedlings were grown in the dark for 3.5 d to elongate the hypocotyls and then transferred to a 16-h-light/8-h-dark cycle for 7 d. Fv/Fm (A) and ΦPSII (B) were measured at an actinic light intensity of 150 µE. Only OX-2 gives a strong enough signal to measure the photosynthetic parameters in the hypocotyls. Error bars indicate sd (n ≥ 20 for leaves and n = 11 for hypocotyls).