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RPI1 mutation reduces the expression of PIN1 and PIN3. (A–C) PIN1pro:PIN1-GFP is expressed in embryos of the wild type (B) and rpi1 mutant (B, C) at heart stages. (D, E) PIN1pro:PIN1-GFP expression pattern in 4-day-old wild type (D) and rpi1 (E) root tips. (F, G) PIN3pro:PIN3-GFP expression pattern in 4-day-old wild type (F) and rpi1 (G) root tips. Bars = 20 μm.
