The changes in the main structural, functional, fluorescent, and cytometric indicators of diatom microalgae Phaeodactylum tricornutum (Bohlin, 1897), Nitzschia sp., and Skeletonema costatum (Cleve, 1873) under different light growth conditions were analyzed; the potential of their application as possible indicators for monitoring algae physiological state was evaluated. For all studied species, uniform light dependences of specific growth rate, C/Chl a, coefficient of cell size variability, relative variable chlorophyll a fluorescence (Fv/Fm), FDA fluorescence, and ratio of living cells were obtained. A significant correlation was established between Fv/Fm and C/Chl a in algae cells. |