Fig. 2. A-Thermodependent changes of PSI delayed
fluorescence intensity (1) and chlorophyll bleaching rate (2-5) in the S. elongatus membranes at I=8 W m-2.
2-5 - rates of
chlorophyll bleaching in control (2), in presence of 1 mM MgBr2 (3),
2 mM sodium ascorbate (4) and anaerobic conditions (5).
B - Correlation between DF intensity
and rate of chlorophyll bleaching in control obtained at temperatures: 60 (1);
65 (2); 70 (3); 75 (4); 78 (5) and 80 (6) oC.