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Histochemical staining patterns for transgenic tobacco lines containing various uidA constructs with or without ABA treatment. For ABA treatment, the leaves were cultured in liquid MS medium containing 200 μM ABA. Control leaves were cultured in liquid MS medium alone. Blue color reveals accumulated GUS protein. (A) 58.1A (-1470phas/uidA). (B) 58.1A treated with ABA. (C) PvAlf-14 (-1470phas/uidA; CaMV35S/PvAlf). (D–G) PvAlf-14 treated with ABA. (H) Plant transgenic for CaMV35S/uidA.
