The function of mdm-miR171i in Arabidopsis. A and B, Phenotypic differences between Arabidopsis plants heterologously expressing mdm-miR171i and the wild type (WT). C, mdm-miR171i-expressing Arabidopsis show reduced drought tolerance. D, Transcriptional levels of the precursor of mdm-miR171i (pri-miR171i), mdm-miR171i, and predicted target genes in transgenic plants. The data are presented as means ± sd from three biological replicates. Asterisks indicate significant differences between the transgenic lines and wild type based on Duncan’s multiple range test (*P < 0.05).