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. 2014 Jan 14;164(3):1470–1483. doi: 10.1104/pp.113.224667

Figure 1.

Figure 1.

HL treatment reduces the photochemical efficiency of PSII in plants with a reduced cytokinin status. A, Schematic overview of the experimental design. Soil-grown 4-week-old plants were continuously grown under SD conditions or exposed for 24 h to HL. White bars, Light period; black bars, dark period; gray bar, HL period. Arrows indicate sampling points. B, Photochemical efficiency of PSII (Fv/Fm) in whole plants (leaf 6) after 24 h of HL (n = 8). C, Fv/Fm in whole 35S:CKX4 plants (leaf 6) sprayed once per day with 10 µm INCYDE starting 5 d before HL treatment (n = 6). D, Fv/Fm in detached leaves 5, 6, and 7 (n = 8). E, Fv/Fm in detached leaf 7 directly after 24 h of light treatment (continuous moderate light [CL] or HL; n = 8). F, Fv/Fm of detached leaf 6 after different HL exposure times (n = 8). Asterisks indicate significant differences from the respective wild-type (WT) condition (* 0.05 > P > 0.01; ** 0.01 > P > 0.001; *** P < 0.001). Error bars represent se.