FIG. 4.
Synopsis of changes in the MCYST cell quotas in response to diurnal dark-light change determined by different authors. Data were obtained in this study (gray circles), by using continuous cultures of M. aeruginosa PCC 7806 at light intensities of 10 and 40 μmol m−2 s−1 (gray and open squares, respectively) (54), and by using a batch culture of M. panniformis at a light intensity of 75 μmol m−2 s−1 (open triangles) (2). Relative MCYST cell quotas (MCYSTrel) were calculated from the original data by determining the ratio of the MCYST cell quota at any sampling time to the MCYST cell quota at the end of the dark phase.