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Online Resource 1. Leaves from Col-O plants (black bars),SCR:NtAQP1 plants (gray bar) and FBPase:NtAQP1 plants (light gray bar) grown under normal conditions or treated with 50 mMNaCl were picked and immersed in artificial xylem sap (AXS). After 1 h, the Kleaf (a) and leaf water potential (Ψleaf) (b)was calculated for each individual leaf. Asterisks represent significant differences between treatments for individual lines (t test, P < 0.05). Different capital or lowercase letters represent significant differences between lines within a treatment for normal irrigation and NaCl, respectively (t test, P < 0.05). Data are means (±SE) of values from 5-12 biological repeats from two independent experiments.