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Expression of the AtNPF6.4 promoter-GUS gene and cellular localization of the AtNPF6.4-GFP fusion protein. (A–E) GUS staining pattern of a transgenic Arabidopsis plant carrying the AtNPF6.4 promoter-GUS fusion construct in 7-day-old seedlings (A), floral shoots (B), a single flower (C), a leaf section (D), and a stem section (E). (F) GFP fluorescence in a tobacco leaf epidermal cells carrying the AtNPF6.4-GFP fusion construct.
