Expression of OSR2 . (A) Expression of OSR2 in various organs assayed by qRT-PCR. The data were from three biological replicates and are presented as mean values ± SE. Rt, root; St, stem; Dl, dividing leaf; El, expanding leaf; Ol, old leaf; In, inflorescence; Fl, flower. (B-F) Expression patterns of OSR2 assayed by GUS staining of transgenic plants carrying a proOSR2:GUS construct. GUS staining was shown in seedling (B), shoot (C), lateral root (LR, D), and the floral organs (E, F). Bars, 2 mm.