[Organization of the photosynthetic units based on action spectra of the functional activity].

The methods for the analysis of the light-harvesting properties of the photosynthetic apparatus by measuring the optical cross-sections and the spectra of action of specific photoreactions were described. A short review summarizes our own findings obtained by these methods in the study of the organization of photosynthetic units in whole cells of purple bacteria, cyanobacteria, and green algae, and in isolated thylakoids from higher plants.