Figure 4.

Growth Rates and Photosynthetic Competence of Wild-Type and Δpsb29 Mutant Cultures of Synechocystis 6803.

(A) Growth of wild-type and mutant cultures were monitored by measuring absorption at 730 nm under three light intensities, indicated in bottom right corner of each set of traces. Error bars represent sd based on mean values of three replicate cultures.

(B) Fluorescence induction profile of wild-type and mutant cultures grown under normal growth light conditions. The time points for F₀ and F_m are marked by arrows.

(C) F_v/F_m values as a function of growth light intensity. Open bars, wild type; hatched bars, mutant. Values were measured after 5 d of growth (n = 3).

(D) Immunoblot analysis of the relative content of D1 and CP47 proteins in total membrane extracts from wild-type and Δpsb29 cultures grown under low light (LL) or high light (HL) conditions for 3 d. Samples were loaded on an equal chlorophyll basis.