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Changes in (a) the maximum efficiency of PSII photochemistry (Fv/Fm) and (b) in efficiency of the water-splitting complex on the donor side of PSII (Fv/Fo) at the whole leaflet level before feeding (control), at the feeding zone after feeding (FZ), and at the whole leaflet after feeding (WL). Error bars are standard deviations. Columns with different letters are statistically different (p < 0.05).
