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Leaf water potential (ΨL) during water stress declines more slowly in transgenic plants with suppressed PPO levels (A). During water stress these plants exhibits higher quantum yields of PSII electron transport (φPSII; B) but lower photoinhibition (C) compared to nontransformed controls. Suppression of PPO reduces chlorophyll loss (D) and anthocyanin accumulation (E) in leaflets at node 7. Results are presented as means ± SE [13].
