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Promoters used in this study. Individual promoters were used to drive the production of FLAG-GFP-RPL18 in transgenic Arabidopsis seedlings (Table 1). Representative images demonstrate the specificity of promoter activity in 7-d-old seedlings of T2 transgenics expressing FLAG-GFP-RPL18. Green, GFP fluorescence; red, chlorophyll in shoots, propidium iodide staining in roots; QC, quiescent center; LR, lateral root primordia. (Scale bar, 50 μm.)
