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Influence of local burning on activities of PSI (1-фPSI0, A) and PSII (фPSII0, B) at 15 min and 135 min after heating to 50°C (n = 6–11). фPSI0, PSI quantum yield after 10-s illumination by far red light; фPSII0, PSII maximum quantum yield. First mature leaf was burned. Second mature leaf was incubated in hot water (heating, 5 min, 50°C). Leaf was dried for 5 min after incubation. Dark adaptation before фPSI0 and фPSII0 registration was 10 min. *, p < 0.05 compared with controls.
