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3H-ABA was introduced into the xylem stream of maize ( Zea mays}) leaves on intact plants by incubation of a semi-attached ‘flap’ of the sheath in solutions. The relative contribution of exportation and metabolism to the fate of xylem-delivered ABA was assessed in leaves which were either kept at different water potentials through soil drying treatments or subjected to different xylem pHs (pH 7.4...
Metabolism and distribution of xylem-fed ABA were investigated in leaves of maize (Zea mays) and Commelina communis when water stress and xylem pH manipulation were applied. 3H-ABA was fed to excised leaves via the transpiration stream. Water stress was applied through either a previous soil-drying before leaves were excised, or a quick dehydration after leaves were fed with ABA. Xylem-delivered ABA...
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