Fig. 1

Tissue expression analysis of the maize gene GRMZM2G174449 and its promoter. a Tissue-specific analysis of GRMZM2G174449 in maize. The significant differences were compared with young root. Asterisks indicate statistically significant differences, as determined by Student’s t-tests (*P < 0.05, **P < 0.01). b-j GUS histochemical staining in different tissues of transgenic rice. b young root; c young culm; d young leaf; e root; f culm; g leaf; h pistil; i stamen; j endosperm. Bars = 5 mm. k Quantitative GUS assays of different tissues in transgenic rice